31120898951 has 2 divisors, whose sum is σ = 31120898952. Its totient is φ = 31120898950.

The previous prime is 31120898927. The next prime is 31120898987. The reversal of 31120898951 is 15989802113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31120898951 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 31120898896 and 31120898905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31120838951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15560449475 + 15560449476.

It is an arithmetic number, because the mean of its divisors is an integer number (15560449476).

Almost surely, 2^31120898951 is an apocalyptic number.

31120898951 is a deficient number, since it is larger than the sum of its proper divisors (1).

31120898951 is an equidigital number, since it uses as much as digits as its factorization.

31120898951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 47.

The spelling of 31120898951 in words is "thirty-one billion, one hundred twenty million, eight hundred ninety-eight thousand, nine hundred fifty-one".