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31313234041 = 103130371711
BaseRepresentation
bin11101001010011010…
…100000100001111001
32222211021101002210221
4131022122200201321
51003112141442131
622215103140041
72155654045345
oct351232404171
988737332727
1031313234041
1112309560221
12609a8a4621
132c5048496b
141730a12625
15c34080411
hex74a6a0879

31313234041 has 4 divisors (see below), whose sum is σ = 31343606784. Its totient is φ = 31282861300.

The previous prime is 31313234027. The next prime is 31313234047. The reversal of 31313234041 is 14043231313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14043231313 = 42131333323.

It is a cyclic number.

It is not a de Polignac number, because 31313234041 - 227 = 31179016313 is a prime.

It is a super-2 number, since 2×313132340412 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31313233997 and 31313234015.

It is not an unprimeable number, because it can be changed into a prime (31313234047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15184825 + ... + 15186886.

It is an arithmetic number, because the mean of its divisors is an integer number (7835901696).

Almost surely, 231313234041 is an apocalyptic number.

It is an amenable number.

31313234041 is a deficient number, since it is larger than the sum of its proper divisors (30372743).

31313234041 is a wasteful number, since it uses less digits than its factorization.

31313234041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30372742.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31313234041 its reverse (14043231313), we get a palindrome (45356465354).

The spelling of 31313234041 in words is "thirty-one billion, three hundred thirteen million, two hundred thirty-four thousand, forty-one".

Divisors: 1 1031 30371711 31313234041