153131213 has 4 divisors (see below), whose sum is σ = 156692448. Its totient is φ = 149569980.

The previous prime is 153131207. The next prime is 153131221. The reversal of 153131213 is 312131351.

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 a cyclic number.

It is not a de Polignac number, because 153131213 - 2¹⁸ = 152869069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153131243) 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, 1780553 + ... + 1780638.

It is an arithmetic number, because the mean of its divisors is an integer number (39173112).

Almost surely, 2^153131213 is an apocalyptic number.

It is an amenable number.

153131213 is a deficient number, since it is larger than the sum of its proper divisors (3561235).

153131213 is an equidigital number, since it uses as much as digits as its factorization.

153131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561234.

The product of its digits is 270, while the sum is 20.

The square root of 153131213 is about 12374.6197113285. The cubic root of 153131213 is about 535.0009759204. Note that the first 3 decimals are identical.

Adding to 153131213 its reverse (312131351), we get a palindrome (465262564).

The spelling of 153131213 in words is "one hundred fifty-three million, one hundred thirty-one thousand, two hundred thirteen".