157161311 has 8 divisors (see below), whose sum is σ = 170904240. Its totient is φ = 143918208.

The previous prime is 157161307. The next prime is 157161313. The reversal of 157161311 is 113161751.

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 157161311 - 2² = 157161307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157161313) 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, 124301 + ... + 125558.

It is an arithmetic number, because the mean of its divisors is an integer number (21363030).

Almost surely, 2^157161311 is an apocalyptic number.

157161311 is a deficient number, since it is larger than the sum of its proper divisors (13742929).

157161311 is a wasteful number, since it uses less digits than its factorization.

157161311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249913.

The product of its digits is 630, while the sum is 26.

The square root of 157161311 is about 12536.3994432213. The cubic root of 157161311 is about 539.6537686810.

The spelling of 157161311 in words is "one hundred fifty-seven million, one hundred sixty-one thousand, three hundred eleven".