245621326031 has 2 divisors, whose sum is σ = 245621326032. Its totient is φ = 245621326030.

The previous prime is 245621326007. The next prime is 245621326051. The reversal of 245621326031 is 130623126542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245621326031 - 2⁶ = 245621325967 is a prime.

It is a super-2 number, since 2×245621326031² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 245621325982 and 245621326000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245621326051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122810663015 + 122810663016.

It is an arithmetic number, because the mean of its divisors is an integer number (122810663016).

Almost surely, 2^245621326031 is an apocalyptic number.

245621326031 is a deficient number, since it is larger than the sum of its proper divisors (1).

245621326031 is an equidigital number, since it uses as much as digits as its factorization.

245621326031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 245621326031 in words is "two hundred forty-five billion, six hundred twenty-one million, three hundred twenty-six thousand, thirty-one".