31462355381 has 2 divisors, whose sum is σ = 31462355382. Its totient is φ = 31462355380.

The previous prime is 31462355371. The next prime is 31462355423. The reversal of 31462355381 is 18355326413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18750920356 + 12711435025 = 136934^2 + 112745^2 .

It is a cyclic number.

It is not a de Polignac number, because 31462355381 - 2¹⁸ = 31462093237 is a prime.

It is a super-2 number, since 2×31462355381² (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 (31462355321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15731177690 + 15731177691.

It is an arithmetic number, because the mean of its divisors is an integer number (15731177691).

Almost surely, 2^31462355381 is an apocalyptic number.

It is an amenable number.

31462355381 is a deficient number, since it is larger than the sum of its proper divisors (1).

31462355381 is an equidigital number, since it uses as much as digits as its factorization.

31462355381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The spelling of 31462355381 in words is "thirty-one billion, four hundred sixty-two million, three hundred fifty-five thousand, three hundred eighty-one".