31300012230251 has 2 divisors, whose sum is σ = 31300012230252. Its totient is φ = 31300012230250.

The previous prime is 31300012230239. The next prime is 31300012230281. The reversal of 31300012230251 is 15203221000313.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31300012230251 is a prime.

It is a super-2 number, since 2×31300012230251² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31300012230281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650006115125 + 15650006115126.

It is an arithmetic number, because the mean of its divisors is an integer number (15650006115126).

Almost surely, 2^{31300012230251} is an apocalyptic number.

31300012230251 is a deficient number, since it is larger than the sum of its proper divisors (1).

31300012230251 is an equidigital number, since it uses as much as digits as its factorization.

31300012230251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 31300012230251 its reverse (15203221000313), we get a palindrome (46503233230564).

The spelling of 31300012230251 in words is "thirty-one trillion, three hundred billion, twelve million, two hundred thirty thousand, two hundred fifty-one".