31114334440 has 32 divisors (see below), whose sum is σ = 80008289280. Its totient is φ = 10667771712.

The previous prime is 31114334423. The next prime is 31114334441. The reversal of 31114334440 is 4443341113.

It is a happy number.

It is a super-2 number, since 2×31114334440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 31114334399 and 31114334408.

It is not an unprimeable number, because it can be changed into a prime (31114334441) 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, 55561032 + ... + 55561591.

It is an arithmetic number, because the mean of its divisors is an integer number (2500259040).

Almost surely, 2^31114334440 is an apocalyptic number.

It is an amenable number.

31114334440 is an abundant number, since it is smaller than the sum of its proper divisors (48893954840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31114334440 is a wasteful number, since it uses less digits than its factorization.

31114334440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111122641 (or 111122637 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31114334440 its reverse (4443341113), we get a palindrome (35557675553).

The spelling of 31114334440 in words is "thirty-one billion, one hundred fourteen million, three hundred thirty-four thousand, four hundred forty".