Search a number
-
+
31089095041 = 1763212
BaseRepresentation
bin11100111101000011…
…011111000110000001
32222020122121122220111
4130331003133012001
51002132302020131
622140535111321
72150262643024
oct347503370601
988218548814
1031089095041
1112203a90284
126037812541
132c15bc8334
14170cd491bb
15c1e558ab1
hex73d0df181

31089095041 has 3 divisors (see below), whose sum is σ = 31089271363. Its totient is φ = 31088918720.

The previous prime is 31089095039. The next prime is 31089095053. The reversal of 31089095041 is 14059098013.

The square root of 31089095041 is 176321.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 28267360641 + 2821734400 = 168129^2 + 53120^2 .

It is not a de Polignac number, because 31089095041 - 21 = 31089095039 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31089094985 and 31089095003.

It is not an unprimeable number, because it can be changed into a prime (31089095341) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 88161 + ... + 264481.

Almost surely, 231089095041 is an apocalyptic number.

31089095041 is the 176321-st square number.

31089095041 is the 88161-st centered octagonal number.

It is an amenable number.

31089095041 is a deficient number, since it is larger than the sum of its proper divisors (176322).

31089095041 is an frugal number, since it uses more digits than its factorization.

31089095041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352642 (or 176321 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 31089095041 in words is "thirty-one billion, eighty-nine million, ninety-five thousand, forty-one".

Divisors: 1 176321 31089095041