131213051 has 4 divisors (see below), whose sum is σ = 131697504. Its totient is φ = 130728600.

The previous prime is 131213029. The next prime is 131213053. The reversal of 131213051 is 150312131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150312131 = 3011 ⋅49921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131213051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131213053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241820 + ... + 242361.

It is an arithmetic number, because the mean of its divisors is an integer number (32924376).

Almost surely, 2^131213051 is an apocalyptic number.

131213051 is a deficient number, since it is larger than the sum of its proper divisors (484453).

131213051 is an equidigital number, since it uses as much as digits as its factorization.

131213051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484452.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 131213051 is about 11454.8265373160. The cubic root of 131213051 is about 508.1504852600.

Adding to 131213051 its reverse (150312131), we get a palindrome (281525182).

The spelling of 131213051 in words is "one hundred thirty-one million, two hundred thirteen thousand, fifty-one".