31992000002 has 4 divisors (see below), whose sum is σ = 47988000006. Its totient is φ = 15996000000.

The previous prime is 31991999971. The next prime is 31992000011. The reversal of 31992000002 is 20000029913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20000029913 = 37 ⋅540541349.

It can be written as a sum of positive squares in only one way, i.e., 26075467441 + 5916532561 = 161479^2 + 76919^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7997999999 + ... + 7998000002.

Almost surely, 2^31992000002 is an apocalyptic number.

31992000002 is a deficient number, since it is larger than the sum of its proper divisors (15996000004).

31992000002 is a wasteful number, since it uses less digits than its factorization.

31992000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15996000003.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 31992000002 its reverse (20000029913), we get a palindrome (51992029915).

The spelling of 31992000002 in words is "thirty-one billion, nine hundred ninety-two million, two", and thus it is an aban number.