31400240643089 has 2 divisors, whose sum is σ = 31400240643090. Its totient is φ = 31400240643088.

The previous prime is 31400240643073. The next prime is 31400240643137. The reversal of 31400240643089 is 98034604200413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26215475211025 + 5184765432064 = 5120105^2 + 2277008^2 .

It is a cyclic number.

It is not a de Polignac number, because 31400240643089 - 2⁴ = 31400240643073 is a prime.

It is a super-2 number, since 2×31400240643089² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31400240643029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700120321544 + 15700120321545.

It is an arithmetic number, because the mean of its divisors is an integer number (15700120321545).

Almost surely, 2^{31400240643089} is an apocalyptic number.

It is an amenable number.

31400240643089 is a deficient number, since it is larger than the sum of its proper divisors (1).

31400240643089 is an equidigital number, since it uses as much as digits as its factorization.

31400240643089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 31400240643089 in words is "thirty-one trillion, four hundred billion, two hundred forty million, six hundred forty-three thousand, eighty-nine".