16311955 has 8 divisors (see below), whose sum is σ = 21353904. Its totient is φ = 11863200.

The previous prime is 16311943. The next prime is 16312001. The reversal of 16311955 is 55911361.

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

It is a de Polignac number, because none of the positive numbers 2^k-16311955 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148236 + ... + 148345.

It is an arithmetic number, because the mean of its divisors is an integer number (2669238).

Almost surely, 2^16311955 is an apocalyptic number.

16311955 is a deficient number, since it is larger than the sum of its proper divisors (5041949).

16311955 is a wasteful number, since it uses less digits than its factorization.

16311955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296597.

The product of its digits is 4050, while the sum is 31.

The square root of 16311955 is about 4038.8061354811. The cubic root of 16311955 is about 253.6113416546.

The spelling of 16311955 in words is "sixteen million, three hundred eleven thousand, nine hundred fifty-five".