31431012148 has 6 divisors (see below), whose sum is σ = 55004271266. Its totient is φ = 15715506072.

The previous prime is 31431012131. The next prime is 31431012149. The reversal of 31431012148 is 84121013413.

It can be written as a sum of positive squares in only one way, i.e., 18116621604 + 13314390544 = 134598^2 + 115388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31431012149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3928876515 + ... + 3928876522.

Almost surely, 2^31431012148 is an apocalyptic number.

It is an amenable number.

31431012148 is a deficient number, since it is larger than the sum of its proper divisors (23573259118).

31431012148 is a wasteful number, since it uses less digits than its factorization.

31431012148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857753041 (or 7857753039 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 31431012148 in words is "thirty-one billion, four hundred thirty-one million, twelve thousand, one hundred forty-eight".