31144223097 has 12 divisors (see below), whose sum is σ = 48446569444. Its totient is φ = 19165675680.

The previous prime is 31144223063. The next prime is 31144223177. The reversal of 31144223097 is 79032244113.

It is a happy number.

31144223097 is a `hidden beast` number, since 3 + 114 + 422 + 30 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12677859216 + 18466363881 = 112596^2 + 135891^2 .

It is not a de Polignac number, because 31144223097 - 2⁸ = 31144222841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31144223797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133094854 + ... + 133095087.

Almost surely, 2^31144223097 is an apocalyptic number.

It is an amenable number.

31144223097 is a deficient number, since it is larger than the sum of its proper divisors (17302346347).

31144223097 is a wasteful number, since it uses less digits than its factorization.

31144223097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266189960 (or 266189957 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 31144223097 in words is "thirty-one billion, one hundred forty-four million, two hundred twenty-three thousand, ninety-seven".