31324315487 has 2 divisors, whose sum is σ = 31324315488. Its totient is φ = 31324315486.

The previous prime is 31324315483. The next prime is 31324315559. The reversal of 31324315487 is 78451342313.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31324315487 - 2² = 31324315483 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31324315483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15662157743 + 15662157744.

It is an arithmetic number, because the mean of its divisors is an integer number (15662157744).

Almost surely, 2^31324315487 is an apocalyptic number.

31324315487 is a deficient number, since it is larger than the sum of its proper divisors (1).

31324315487 is an equidigital number, since it uses as much as digits as its factorization.

31324315487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 41.

The spelling of 31324315487 in words is "thirty-one billion, three hundred twenty-four million, three hundred fifteen thousand, four hundred eighty-seven".