31542440130 has 48 divisors (see below), whose sum is σ = 82021852224. Its totient is φ = 8410137120.

The previous prime is 31542440123. The next prime is 31542440131. The reversal of 31542440130 is 3104424513.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31542440094 and 31542440103.

It is not an unprimeable number, because it can be changed into a prime (31542440131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 757965 + ... + 798495.

It is an arithmetic number, because the mean of its divisors is an integer number (1708788588).

Almost surely, 2^31542440130 is an apocalyptic number.

31542440130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31542440130 is an abundant number, since it is smaller than the sum of its proper divisors (50479412094).

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

31542440130 is a wasteful number, since it uses less digits than its factorization.

31542440130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49191 (or 49188 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 31542440130 its reverse (3104424513), we get a palindrome (34646864643).

The spelling of 31542440130 in words is "thirty-one billion, five hundred forty-two million, four hundred forty thousand, one hundred thirty".