31413231497 has 2 divisors, whose sum is σ = 31413231498. Its totient is φ = 31413231496.

The previous prime is 31413231413. The next prime is 31413231523. The reversal of 31413231497 is 79413231413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26575194361 + 4838037136 = 163019^2 + 69556^2 .

It is an emirp because it is prime and its reverse (79413231413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31413231497 - 2²² = 31409037193 is a prime.

It is a super-2 number, since 2×31413231497² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31413231497.

It is not a weakly prime, because it can be changed into another prime (31413251497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15706615748 + 15706615749.

It is an arithmetic number, because the mean of its divisors is an integer number (15706615749).

Almost surely, 2^31413231497 is an apocalyptic number.

It is an amenable number.

31413231497 is a deficient number, since it is larger than the sum of its proper divisors (1).

31413231497 is an equidigital number, since it uses as much as digits as its factorization.

31413231497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The spelling of 31413231497 in words is "thirty-one billion, four hundred thirteen million, two hundred thirty-one thousand, four hundred ninety-seven".