31488001 has 4 divisors (see below), whose sum is σ = 31509952. Its totient is φ = 31466052.

The previous prime is 31487993. The next prime is 31488013. The reversal of 31488001 is 10088413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31488001 - 2³ = 31487993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31488031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8661 + ... + 11746.

It is an arithmetic number, because the mean of its divisors is an integer number (7877488).

Almost surely, 2^31488001 is an apocalyptic number.

It is an amenable number.

31488001 is a deficient number, since it is larger than the sum of its proper divisors (21951).

31488001 is a wasteful number, since it uses less digits than its factorization.

31488001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21950.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 31488001 is about 5611.4170224641. The cubic root of 31488001 is about 315.7778742616. Note that the first 3 decimals are identical.

The spelling of 31488001 in words is "thirty-one million, four hundred eighty-eight thousand, one".