31402142010 has 24 divisors (see below), whose sum is σ = 81645569460. Its totient is φ = 8373904512.

The previous prime is 31402142003. The next prime is 31402142033. The reversal of 31402142010 is 1024120413.

It can be written as a sum of positive squares in 2 ways, for example, as 31128603489 + 273538521 = 176433^2 + 16539^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174456255 + ... + 174456434.

Almost surely, 2^31402142010 is an apocalyptic number.

31402142010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31402142010 is an abundant number, since it is smaller than the sum of its proper divisors (50243427450).

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

31402142010 is a wasteful number, since it uses less digits than its factorization.

31402142010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348912702 (or 348912699 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 31402142010 its reverse (1024120413), we get a palindrome (32426262423).

The spelling of 31402142010 in words is "thirty-one billion, four hundred two million, one hundred forty-two thousand, ten".