31874069 has 2 divisors, whose sum is σ = 31874070. Its totient is φ = 31874068.

The previous prime is 31874053. The next prime is 31874093. The reversal of 31874069 is 96047813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31787044 + 87025 = 5638^2 + 295^2 .

It is an emirp because it is prime and its reverse (96047813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31874069 - 2⁴ = 31874053 is a prime.

It is a super-2 number, since 2×31874069² = 2031912549233522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31874369) 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, 15937034 + 15937035.

It is an arithmetic number, because the mean of its divisors is an integer number (15937035).

Almost surely, 2^31874069 is an apocalyptic number.

It is an amenable number.

31874069 is a deficient number, since it is larger than the sum of its proper divisors (1).

31874069 is an equidigital number, since it uses as much as digits as its factorization.

31874069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 31874069 is about 5645.7124439702. The cubic root of 31874069 is about 317.0631982984.

The spelling of 31874069 in words is "thirty-one million, eight hundred seventy-four thousand, sixty-nine".