Search a number
-
+
31245464371 = 1113720733553
BaseRepresentation
bin11101000110010111…
…111111001100110011
32222122112212001022011
4131012113333030303
51002442314324441
622204242423351
72154202031212
oct350627771463
988575761264
1031245464371
1112284282930
126080061b57
132c3c417374
141725a11079
15c2d145581
hex7465ff333

31245464371 has 8 divisors (see below), whose sum is σ = 34334765424. Its totient is φ = 28197630720.

The previous prime is 31245464359. The next prime is 31245464389. The reversal of 31245464371 is 17346454213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31245464371 - 223 = 31237075763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31245464351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10365270 + ... + 10368283.

It is an arithmetic number, because the mean of its divisors is an integer number (4291845678).

Almost surely, 231245464371 is an apocalyptic number.

31245464371 is a deficient number, since it is larger than the sum of its proper divisors (3089301053).

31245464371 is a wasteful number, since it uses less digits than its factorization.

31245464371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20733701.

The product of its digits is 241920, while the sum is 40.

It can be divided in two parts, 31245 and 464371, that added together give a square (495616 = 7042).

The spelling of 31245464371 in words is "thirty-one billion, two hundred forty-five million, four hundred sixty-four thousand, three hundred seventy-one".

Divisors: 1 11 137 1507 20733553 228069083 2840496761 31245464371