31402334357 has 2 divisors, whose sum is σ = 31402334358. Its totient is φ = 31402334356.

The previous prime is 31402334339. The next prime is 31402334377. The reversal of 31402334357 is 75343320413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17874085636 + 13528248721 = 133694^2 + 116311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31402334357 is a prime.

It is a super-2 number, since 2×31402334357² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31402334377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15701167178 + 15701167179.

It is an arithmetic number, because the mean of its divisors is an integer number (15701167179).

Almost surely, 2^31402334357 is an apocalyptic number.

It is an amenable number.

31402334357 is a deficient number, since it is larger than the sum of its proper divisors (1).

31402334357 is an equidigital number, since it uses as much as digits as its factorization.

31402334357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 35.

The spelling of 31402334357 in words is "thirty-one billion, four hundred two million, three hundred thirty-four thousand, three hundred fifty-seven".