31382762069 has 2 divisors, whose sum is σ = 31382762070. Its totient is φ = 31382762068.

The previous prime is 31382762063. The next prime is 31382762071. The reversal of 31382762069 is 96026728313.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19130485969 + 12252276100 = 138313^2 + 110690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31382762069 is a prime.

It is a super-2 number, since 2×31382762069² (a number of 22 digits) contains 22 as substring.

Together with 31382762071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31382762063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15691381034 + 15691381035.

It is an arithmetic number, because the mean of its divisors is an integer number (15691381035).

Almost surely, 2^31382762069 is an apocalyptic number.

It is an amenable number.

31382762069 is a deficient number, since it is larger than the sum of its proper divisors (1).

31382762069 is an equidigital number, since it uses as much as digits as its factorization.

31382762069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 31382762069 in words is "thirty-one billion, three hundred eighty-two million, seven hundred sixty-two thousand, sixty-nine".