31324034257 has 2 divisors, whose sum is σ = 31324034258. Its totient is φ = 31324034256.

The previous prime is 31324034197. The next prime is 31324034263. The reversal of 31324034257 is 75243042313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18365399361 + 12958634896 = 135519^2 + 113836^2 .

It is an emirp because it is prime and its reverse (75243042313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31324034257 - 2¹¹ = 31324032209 is a prime.

It is not a weakly prime, because it can be changed into another prime (31324035257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15662017128 + 15662017129.

It is an arithmetic number, because the mean of its divisors is an integer number (15662017129).

Almost surely, 2^31324034257 is an apocalyptic number.

It is an amenable number.

31324034257 is a deficient number, since it is larger than the sum of its proper divisors (1).

31324034257 is an equidigital number, since it uses as much as digits as its factorization.

31324034257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 34.

The spelling of 31324034257 in words is "thirty-one billion, three hundred twenty-four million, thirty-four thousand, two hundred fifty-seven".