155971323 has 24 divisors (see below), whose sum is σ = 244807680. Its totient is φ = 95327280.

The previous prime is 155971313. The next prime is 155971331. The reversal of 155971323 is 323179551.

155971323 is a `hidden beast` number, since 1 + 559 + 71 + 32 + 3 = 666.

It is not a de Polignac number, because 155971323 - 2¹⁶ = 155905787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155971313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9411 + ... + 20012.

It is an arithmetic number, because the mean of its divisors is an integer number (10200320).

Almost surely, 2^155971323 is an apocalyptic number.

155971323 is a deficient number, since it is larger than the sum of its proper divisors (88836357).

155971323 is a wasteful number, since it uses less digits than its factorization.

155971323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29479 (or 29476 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

The square root of 155971323 is about 12488.8479452670. The cubic root of 155971323 is about 538.2882732069.

The spelling of 155971323 in words is "one hundred fifty-five million, nine hundred seventy-one thousand, three hundred twenty-three".