31004430102140 has 24 divisors (see below), whose sum is σ = 71028330779952. Its totient is φ = 11274338218880.

The previous prime is 31004430102131. The next prime is 31004430102143. The reversal of 31004430102140 is 4120103440013.

It is a super-2 number, since 2×31004430102140² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31004430102143) 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, 70464613649 + ... + 70464614088.

It is an arithmetic number, because the mean of its divisors is an integer number (2959513782498).

Almost surely, 2^{31004430102140} is an apocalyptic number.

It is an amenable number.

31004430102140 is an abundant number, since it is smaller than the sum of its proper divisors (40023900677812).

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

31004430102140 is a wasteful number, since it uses less digits than its factorization.

31004430102140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140929227757 (or 140929227755 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31004430102140 its reverse (4120103440013), we get a palindrome (35124533542153).

The spelling of 31004430102140 in words is "thirty-one trillion, four billion, four hundred thirty million, one hundred two thousand, one hundred forty".