31500103245 has 32 divisors (see below), whose sum is σ = 55197072000. Its totient is φ = 15244894464.

The previous prime is 31500103231. The next prime is 31500103247. The reversal of 31500103245 is 54230100513.

It is not a de Polignac number, because 31500103245 - 2¹⁴ = 31500086861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31500103247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1357470 + ... + 1380479.

It is an arithmetic number, because the mean of its divisors is an integer number (1724908500).

Almost surely, 2^31500103245 is an apocalyptic number.

It is an amenable number.

31500103245 is a deficient number, since it is larger than the sum of its proper divisors (23696968755).

31500103245 is a wasteful number, since it uses less digits than its factorization.

31500103245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738029.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 31500103245 its reverse (54230100513), we get a palindrome (85730203758).

The spelling of 31500103245 in words is "thirty-one billion, five hundred million, one hundred three thousand, two hundred forty-five".