155042313 has 4 divisors (see below), whose sum is σ = 206723088. Its totient is φ = 103361540.

The previous prime is 155042281. The next prime is 155042341. The reversal of 155042313 is 313240551.

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 155042313 - 2⁵ = 155042281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155042113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25840383 + ... + 25840388.

It is an arithmetic number, because the mean of its divisors is an integer number (51680772).

Almost surely, 2^155042313 is an apocalyptic number.

It is an amenable number.

155042313 is a deficient number, since it is larger than the sum of its proper divisors (51680775).

155042313 is an equidigital number, since it uses as much as digits as its factorization.

155042313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51680774.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 155042313 is about 12451.5988130039. The cubic root of 155042313 is about 537.2174110736.

Adding to 155042313 its reverse (313240551), we get a palindrome (468282864).

The spelling of 155042313 in words is "one hundred fifty-five million, forty-two thousand, three hundred thirteen".