172531151315 has 16 divisors (see below), whose sum is σ = 216061425216. Its totient is φ = 132010137600.

The previous prime is 172531151257. The next prime is 172531151329. The reversal of 172531151315 is 513151135271.

It is not a de Polignac number, because 172531151315 - 2¹² = 172531147219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114235 + ... + 1259595.

It is an arithmetic number, because the mean of its divisors is an integer number (13503839076).

Almost surely, 2^172531151315 is an apocalyptic number.

172531151315 is a deficient number, since it is larger than the sum of its proper divisors (43530273901).

172531151315 is a wasteful number, since it uses less digits than its factorization.

172531151315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155710.

The product of its digits is 15750, while the sum is 35.

Adding to 172531151315 its reverse (513151135271), we get a palindrome (685682286586).

The spelling of 172531151315 in words is "one hundred seventy-two billion, five hundred thirty-one million, one hundred fifty-one thousand, three hundred fifteen".