31404007 has 2 divisors, whose sum is σ = 31404008. Its totient is φ = 31404006.

The previous prime is 31403969. The next prime is 31404011. The reversal of 31404007 is 70040413.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31404007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31404047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15702003 + 15702004.

It is an arithmetic number, because the mean of its divisors is an integer number (15702004).

Almost surely, 2^31404007 is an apocalyptic number.

31404007 is a deficient number, since it is larger than the sum of its proper divisors (1).

31404007 is an equidigital number, since it uses as much as digits as its factorization.

31404007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 31404007 is about 5603.9278189498. The cubic root of 31404007 is about 315.4968458842.

The spelling of 31404007 in words is "thirty-one million, four hundred four thousand, seven".