31348478007 has 40 divisors (see below), whose sum is σ = 58384478592. Its totient is φ = 16284920400.

The previous prime is 31348477999. The next prime is 31348478009. The reversal of 31348478007 is 70087484313.

It is not a de Polignac number, because 31348478007 - 2³ = 31348477999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31348478009) 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 in 39 ways as a sum of consecutive naturals, for example, 2506869 + ... + 2519342.

Almost surely, 2^31348478007 is an apocalyptic number.

31348478007 is a deficient number, since it is larger than the sum of its proper divisors (27036000585).

31348478007 is a wasteful number, since it uses less digits than its factorization.

31348478007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026241 (or 5026232 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 31348478007 in words is "thirty-one billion, three hundred forty-eight million, four hundred seventy-eight thousand, seven".