31043105440 has 24 divisors (see below), whose sum is σ = 73339336980. Its totient is φ = 12417242112.

The previous prime is 31043105417. The next prime is 31043105447. The reversal of 31043105440 is 4450134013.

It can be written as a sum of positive squares in 2 ways, for example, as 28578578704 + 2464526736 = 169052^2 + 49644^2 .

It is not an unprimeable number, because it can be changed into a prime (31043105447) 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, 97009545 + ... + 97009864.

Almost surely, 2^31043105440 is an apocalyptic number.

It is an amenable number.

31043105440 is an abundant number, since it is smaller than the sum of its proper divisors (42296231540).

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

31043105440 is a wasteful number, since it uses less digits than its factorization.

31043105440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194019424 (or 194019416 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 31043105440 its reverse (4450134013), we get a palindrome (35493239453).

The spelling of 31043105440 in words is "thirty-one billion, forty-three million, one hundred five thousand, four hundred forty".