318155145 has 32 divisors (see below), whose sum is σ = 634659840. Its totient is φ = 132219840.

The previous prime is 318155129. The next prime is 318155147. The reversal of 318155145 is 541551813.

It is a happy number.

It is not a de Polignac number, because 318155145 - 2⁴ = 318155129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (318155147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136575 + ... + 138884.

It is an arithmetic number, because the mean of its divisors is an integer number (19833120).

Almost surely, 2^318155145 is an apocalyptic number.

318155145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

318155145 is a deficient number, since it is larger than the sum of its proper divisors (316504695).

318155145 is a wasteful number, since it uses less digits than its factorization.

318155145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275485.

The product of its digits is 12000, while the sum is 33.

The square root of 318155145 is about 17836.9040194760. The cubic root of 318155145 is about 682.6734038589.

The spelling of 318155145 in words is "three hundred eighteen million, one hundred fifty-five thousand, one hundred forty-five".