155163431 has 8 divisors (see below), whose sum is σ = 157412304. Its totient is φ = 152928000.

The previous prime is 155163419. The next prime is 155163457. The reversal of 155163431 is 134361551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155163431 - 2¹⁸ = 154901287 is a prime.

It is a super-2 number, since 2×155163431² = 48151380639383522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155163394 and 155163403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155163461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21161 + ... + 27533.

It is an arithmetic number, because the mean of its divisors is an integer number (19676538).

Almost surely, 2^155163431 is an apocalyptic number.

155163431 is a deficient number, since it is larger than the sum of its proper divisors (2248873).

155163431 is an equidigital number, since it uses as much as digits as its factorization.

155163431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6721.

The product of its digits is 5400, while the sum is 29.

The square root of 155163431 is about 12456.4614156670. The cubic root of 155163431 is about 537.3572648578.

The spelling of 155163431 in words is "one hundred fifty-five million, one hundred sixty-three thousand, four hundred thirty-one".