31402867 has 2 divisors, whose sum is σ = 31402868. Its totient is φ = 31402866.

The previous prime is 31402841. The next prime is 31402901. The reversal of 31402867 is 76820413.

It is a weak prime.

It is an emirp because it is prime and its reverse (76820413) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31402867 is a prime.

It is a super-2 number, since 2×31402867² = 1972280111639378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31402817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15701433 + 15701434.

It is an arithmetic number, because the mean of its divisors is an integer number (15701434).

Almost surely, 2^31402867 is an apocalyptic number.

31402867 is a deficient number, since it is larger than the sum of its proper divisors (1).

31402867 is an equidigital number, since it uses as much as digits as its factorization.

31402867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 31402867 is about 5603.8261036545. The cubic root of 31402867 is about 315.4930282105.

The spelling of 31402867 in words is "thirty-one million, four hundred two thousand, eight hundred sixty-seven".