31504514413 has 2 divisors, whose sum is σ = 31504514414. Its totient is φ = 31504514412.

The previous prime is 31504514401. The next prime is 31504514423. The reversal of 31504514413 is 31441540513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28305707049 + 3198807364 = 168243^2 + 56558^2 .

It is an emirp because it is prime and its reverse (31441540513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31504514413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31504514423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15752257206 + 15752257207.

It is an arithmetic number, because the mean of its divisors is an integer number (15752257207).

Almost surely, 2^31504514413 is an apocalyptic number.

It is an amenable number.

31504514413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31504514413 is an equidigital number, since it uses as much as digits as its factorization.

31504514413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 31504514413 in words is "thirty-one billion, five hundred four million, five hundred fourteen thousand, four hundred thirteen".