316391949 has 6 divisors (see below), whose sum is σ = 457010606. Its totient is φ = 210927960.

The previous prime is 316391917. The next prime is 316391963. The reversal of 316391949 is 949193613.

316391949 is a `hidden beast` number, since 3 + 1 + 639 + 1 + 9 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 283248900 + 33143049 = 16830^2 + 5757^2 .

It is not a de Polignac number, because 316391949 - 2⁵ = 316391917 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 (316391909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17577322 + ... + 17577339.

Almost surely, 2^316391949 is an apocalyptic number.

It is an amenable number.

316391949 is a deficient number, since it is larger than the sum of its proper divisors (140618657).

316391949 is a wasteful number, since it uses less digits than its factorization.

316391949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35154667 (or 35154664 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 316391949 is about 17787.4098451686. The cubic root of 316391949 is about 681.4099558298.

The spelling of 316391949 in words is "three hundred sixteen million, three hundred ninety-one thousand, nine hundred forty-nine".