151431213 has 4 divisors (see below), whose sum is σ = 201908288. Its totient is φ = 100954140.

The previous prime is 151431199. The next prime is 151431221. The reversal of 151431213 is 312134151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 151431213 - 2⁹ = 151430701 is a prime.

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 151431213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151431263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25238533 + ... + 25238538.

It is an arithmetic number, because the mean of its divisors is an integer number (50477072).

Almost surely, 2^151431213 is an apocalyptic number.

It is an amenable number.

151431213 is a deficient number, since it is larger than the sum of its proper divisors (50477075).

151431213 is an equidigital number, since it uses as much as digits as its factorization.

151431213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50477074.

The product of its digits is 360, while the sum is 21.

The square root of 151431213 is about 12305.7390269744. The cubic root of 151431213 is about 533.0138169080.

Adding to 151431213 its reverse (312134151), we get a palindrome (463565364).

The spelling of 151431213 in words is "one hundred fifty-one million, four hundred thirty-one thousand, two hundred thirteen".