31010142040 has 32 divisors (see below), whose sum is σ = 69885594000. Its totient is φ = 12384008064.

The previous prime is 31010142011. The next prime is 31010142049. The reversal of 31010142040 is 4024101013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010142049) 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, 601455 + ... + 650974.

Almost surely, 2^31010142040 is an apocalyptic number.

It is an amenable number.

31010142040 is an abundant number, since it is smaller than the sum of its proper divisors (38875451960).

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

31010142040 is a wasteful number, since it uses less digits than its factorization.

31010142040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253059 (or 1253055 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 31010142040 its reverse (4024101013), we get a palindrome (35034243053).

The spelling of 31010142040 in words is "thirty-one billion, ten million, one hundred forty-two thousand, forty".