31455303641 has 2 divisors, whose sum is σ = 31455303642. Its totient is φ = 31455303640.

The previous prime is 31455303637. The next prime is 31455303667. The reversal of 31455303641 is 14630355413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30639001600 + 816302041 = 175040^2 + 28571^2 .

It is a cyclic number.

It is not a de Polignac number, because 31455303641 - 2² = 31455303637 is a prime.

It is a super-2 number, since 2×31455303641² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31455303041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15727651820 + 15727651821.

It is an arithmetic number, because the mean of its divisors is an integer number (15727651821).

Almost surely, 2^31455303641 is an apocalyptic number.

It is an amenable number.

31455303641 is a deficient number, since it is larger than the sum of its proper divisors (1).

31455303641 is an equidigital number, since it uses as much as digits as its factorization.

31455303641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 31455303641 in words is "thirty-one billion, four hundred fifty-five million, three hundred three thousand, six hundred forty-one".