31864044148 has 6 divisors (see below), whose sum is σ = 55762077266. Its totient is φ = 15932022072.

The previous prime is 31864044137. The next prime is 31864044161. The reversal of 31864044148 is 84144046813.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17568972304 + 14295071844 = 132548^2 + 119562^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3983005515 + ... + 3983005522.

Almost surely, 2^31864044148 is an apocalyptic number.

It is an amenable number.

31864044148 is a deficient number, since it is larger than the sum of its proper divisors (23898033118).

31864044148 is a wasteful number, since it uses less digits than its factorization.

31864044148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966011041 (or 7966011039 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 31864044148 in words is "thirty-one billion, eight hundred sixty-four million, forty-four thousand, one hundred forty-eight".