313861949 has 4 divisors (see below), whose sum is σ = 323986560. Its totient is φ = 303737340.

The previous prime is 313861943. The next prime is 313861957. The reversal of 313861949 is 949168313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 949168313 = 19 ⋅49956227.

It is a cyclic number.

It is not a de Polignac number, because 313861949 - 2¹² = 313857853 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 (313861943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5062259 + ... + 5062320.

It is an arithmetic number, because the mean of its divisors is an integer number (80996640).

Almost surely, 2^313861949 is an apocalyptic number.

It is an amenable number.

313861949 is a deficient number, since it is larger than the sum of its proper divisors (10124611).

313861949 is a wasteful number, since it uses less digits than its factorization.

313861949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10124610.

The product of its digits is 139968, while the sum is 44.

The square root of 313861949 is about 17716.1493841071. The cubic root of 313861949 is about 679.5888149945.

The spelling of 313861949 in words is "three hundred thirteen million, eight hundred sixty-one thousand, nine hundred forty-nine".