31000030132 has 12 divisors (see below), whose sum is σ = 56000054656. Its totient is φ = 15000014520.

The previous prime is 31000030129. The next prime is 31000030133. The reversal of 31000030132 is 23103000013.

It is a super-2 number, since 2×31000030132² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000030133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124999998 + ... + 125000245.

Almost surely, 2^31000030132 is an apocalyptic number.

It is an amenable number.

31000030132 is a deficient number, since it is larger than the sum of its proper divisors (25000024524).

31000030132 is a wasteful number, since it uses less digits than its factorization.

31000030132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250000278 (or 250000276 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 31000030132 its reverse (23103000013), we get a palindrome (54103030145).

The spelling of 31000030132 in words is "thirty-one billion, thirty thousand, one hundred thirty-two".