155968313 has 4 divisors (see below), whose sum is σ = 162749568. Its totient is φ = 149187060.

The previous prime is 155968303. The next prime is 155968333. The reversal of 155968313 is 313869551.

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, and also an emirpimes, since its reverse is a distinct semiprime: 313869551 = 53 ⋅5922067.

It is a cyclic number.

It is not a de Polignac number, because 155968313 - 2⁴ = 155968297 is a prime.

It is a super-2 number, since 2×155968313² = 48652229320131938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155968303) 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, 3390593 + ... + 3390638.

It is an arithmetic number, because the mean of its divisors is an integer number (40687392).

Almost surely, 2^155968313 is an apocalyptic number.

It is an amenable number.

155968313 is a deficient number, since it is larger than the sum of its proper divisors (6781255).

155968313 is an equidigital number, since it uses as much as digits as its factorization.

155968313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781254.

The product of its digits is 97200, while the sum is 41.

The square root of 155968313 is about 12488.7274371731. The cubic root of 155968313 is about 538.2848104804.

The spelling of 155968313 in words is "one hundred fifty-five million, nine hundred sixty-eight thousand, three hundred thirteen".