31377313 has 8 divisors (see below), whose sum is σ = 35718336. Its totient is φ = 27284400.

The previous prime is 31377287. The next prime is 31377317.

31377313 is nontrivially palindromic in base 10.

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-31377313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31377317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61758 + ... + 62263.

It is an arithmetic number, because the mean of its divisors is an integer number (4464792).

Almost surely, 2^31377313 is an apocalyptic number.

It is an amenable number.

31377313 is a deficient number, since it is larger than the sum of its proper divisors (4341023).

31377313 is a wasteful number, since it uses less digits than its factorization.

31377313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124055.

The product of its digits is 3969, while the sum is 28.

The square root of 31377313 is about 5601.5455902813. The cubic root of 31377313 is about 315.4074277814.

The spelling of 31377313 in words is "thirty-one million, three hundred seventy-seven thousand, three hundred thirteen".