131203015 has 4 divisors (see below), whose sum is σ = 157443624. Its totient is φ = 104962408.

The previous prime is 131203003. The next prime is 131203043. The reversal of 131203015 is 510302131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131203015 - 2¹³ = 131194823 is a prime.

It is a super-2 number, since 2×131203015² = 34428462290180450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131203015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13120297 + ... + 13120306.

It is an arithmetic number, because the mean of its divisors is an integer number (39360906).

Almost surely, 2^131203015 is an apocalyptic number.

131203015 is a deficient number, since it is larger than the sum of its proper divisors (26240609).

131203015 is an equidigital number, since it uses as much as digits as its factorization.

131203015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26240608.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 131203015 is about 11454.3884603238. The cubic root of 131203015 is about 508.1375294138.

Adding to 131203015 its reverse (510302131), we get a palindrome (641505146).

The spelling of 131203015 in words is "one hundred thirty-one million, two hundred three thousand, fifteen".