31442607 has 16 divisors (see below), whose sum is σ = 53236480. Its totient is φ = 17967096.

The previous prime is 31442591. The next prime is 31442617. The reversal of 31442607 is 70624413.

31442607 is a `hidden beast` number, since 3 + 14 + 42 + 607 = 666.

It is not a de Polignac number, because 31442607 - 2⁴ = 31442591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82993 + ... + 83370.

It is an arithmetic number, because the mean of its divisors is an integer number (3327280).

Almost surely, 2^31442607 is an apocalyptic number.

31442607 is a deficient number, since it is larger than the sum of its proper divisors (21793873).

31442607 is a wasteful number, since it uses less digits than its factorization.

31442607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166379 (or 166373 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 31442607 is about 5607.3707742578. The cubic root of 31442607 is about 315.6260564877.

The spelling of 31442607 in words is "thirty-one million, four hundred forty-two thousand, six hundred seven".