155340312 has 16 divisors (see below), whose sum is σ = 388350840. Its totient is φ = 51780096.

The previous prime is 155340301. The next prime is 155340313. The reversal of 155340312 is 213043551.

It is a super-2 number, since 2×155340312² = 48261225064514688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 6472513 = 155340312 / (1 + 5 + 5 + 3 + 4 + 0 + 3 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155340313) 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, 3236233 + ... + 3236280.

Almost surely, 2^155340312 is an apocalyptic number.

155340312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155340312 is an abundant number, since it is smaller than the sum of its proper divisors (233010528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155340312 is a wasteful number, since it uses less digits than its factorization.

155340312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472522 (or 6472518 counting only the distinct ones).

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

The square root of 155340312 is about 12463.5593631996. The cubic root of 155340312 is about 537.5613769464.

Adding to 155340312 its reverse (213043551), we get a palindrome (368383863).

The spelling of 155340312 in words is "one hundred fifty-five million, three hundred forty thousand, three hundred twelve".