31049377 has 2 divisors, whose sum is σ = 31049378. Its totient is φ = 31049376.

The previous prime is 31049371. The next prime is 31049407. The reversal of 31049377 is 77394013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30041361 + 1008016 = 5481^2 + 1004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31049377 is a prime.

It is not a weakly prime, because it can be changed into another prime (31049371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15524688 + 15524689.

It is an arithmetic number, because the mean of its divisors is an integer number (15524689).

Almost surely, 2^31049377 is an apocalyptic number.

It is an amenable number.

31049377 is a deficient number, since it is larger than the sum of its proper divisors (1).

31049377 is an equidigital number, since it uses as much as digits as its factorization.

31049377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 31049377 is about 5572.1967840341. The cubic root of 31049377 is about 314.3047638099.

The spelling of 31049377 in words is "thirty-one million, forty-nine thousand, three hundred seventy-seven".