31500015150006 has 80 divisors (see below), whose sum is σ = 77630152146624. Its totient is φ = 9486092912256.

The previous prime is 31500015149989. The next prime is 31500015150029. The reversal of 31500015150006 is 60005151000513.

31500015150006 is a `hidden beast` number, since 3 + 1 + 5 + 0 + 0 + 0 + 151 + 500 + 0 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 159020935 + ... + 159218898.

Almost surely, 2^{31500015150006} is an apocalyptic number.

31500015150006 is an abundant number, since it is smaller than the sum of its proper divisors (46130136996618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31500015150006 is a wasteful number, since it uses less digits than its factorization.

31500015150006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318239907 (or 318239898 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 31500015150006 its reverse (60005151000513), we get a palindrome (91505166150519).

The spelling of 31500015150006 in words is "thirty-one trillion, five hundred billion, fifteen million, one hundred fifty thousand, six".