31324053251 has 2 divisors, whose sum is σ = 31324053252. Its totient is φ = 31324053250.

The previous prime is 31324053197. The next prime is 31324053283. The reversal of 31324053251 is 15235042313.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31324053251 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31324253251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15662026625 + 15662026626.

It is an arithmetic number, because the mean of its divisors is an integer number (15662026626).

Almost surely, 2^31324053251 is an apocalyptic number.

31324053251 is a deficient number, since it is larger than the sum of its proper divisors (1).

31324053251 is an equidigital number, since it uses as much as digits as its factorization.

31324053251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 31324053251 its reverse (15235042313), we get a palindrome (46559095564).

The spelling of 31324053251 in words is "thirty-one billion, three hundred twenty-four million, fifty-three thousand, two hundred fifty-one".