31503224149 has 2 divisors, whose sum is σ = 31503224150. Its totient is φ = 31503224148.

The previous prime is 31503224107. The next prime is 31503224153. The reversal of 31503224149 is 94142230513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22365202500 + 9138021649 = 149550^2 + 95593^2 .

It is a cyclic number.

It is not a de Polignac number, because 31503224149 - 2²⁷ = 31369006421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31503224549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15751612074 + 15751612075.

It is an arithmetic number, because the mean of its divisors is an integer number (15751612075).

Almost surely, 2^31503224149 is an apocalyptic number.

It is an amenable number.

31503224149 is a deficient number, since it is larger than the sum of its proper divisors (1).

31503224149 is an equidigital number, since it uses as much as digits as its factorization.

31503224149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 31503224149 in words is "thirty-one billion, five hundred three million, two hundred twenty-four thousand, one hundred forty-nine".