131213115 has 40 divisors (see below), whose sum is σ = 256603248. Its totient is φ = 63616320.

The previous prime is 131213101. The next prime is 131213129. The reversal of 131213115 is 511312131.

It is an interprime number because it is at equal distance from previous prime (131213101) and next prime (131213129).

It is not a de Polignac number, because 131213115 - 2⁹ = 131212603 is a prime.

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, 10272 + ... + 19181.

Almost surely, 2^131213115 is an apocalyptic number.

131213115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131213115 is a deficient number, since it is larger than the sum of its proper divisors (125390133).

131213115 is a wasteful number, since it uses less digits than its factorization.

131213115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29481 (or 29472 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 131213115 is about 11454.8293308980. The cubic root of 131213115 is about 508.1505678778.

Adding to 131213115 its reverse (511312131), we get a palindrome (642525246).

It can be divided in two parts, 131213 and 115, that added together give a triangular number (131328 = T₅₁₂).

The spelling of 131213115 in words is "one hundred thirty-one million, two hundred thirteen thousand, one hundred fifteen".