31402242132 has 24 divisors (see below), whose sum is σ = 73831229472. Its totient is φ = 10387509600.

The previous prime is 31402242119. The next prime is 31402242149. The reversal of 31402242132 is 23124220413.

It is a happy number.

It is a super-2 number, since 2×31402242132² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9986419 + ... + 9989562.

It is an arithmetic number, because the mean of its divisors is an integer number (3076301228).

Almost surely, 2^31402242132 is an apocalyptic number.

It is an amenable number.

31402242132 is an abundant number, since it is smaller than the sum of its proper divisors (42428987340).

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

31402242132 is a wasteful number, since it uses less digits than its factorization.

31402242132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19976119 (or 19976117 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31402242132 its reverse (23124220413), we get a palindrome (54526462545).

The spelling of 31402242132 in words is "thirty-one billion, four hundred two million, two hundred forty-two thousand, one hundred thirty-two".