31404545 has 8 divisors (see below), whose sum is σ = 39324096. Its totient is φ = 24031216.

The previous prime is 31404523. The next prime is 31404563. The reversal of 31404545 is 54540413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31404545 - 2⁶ = 31404481 is a prime.

It is a Duffinian number.

31404545 is a modest number, since divided by 4545 gives 3140 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136427 + ... + 136656.

It is an arithmetic number, because the mean of its divisors is an integer number (4915512).

Almost surely, 2^31404545 is an apocalyptic number.

It is an amenable number.

31404545 is a deficient number, since it is larger than the sum of its proper divisors (7919551).

31404545 is a wasteful number, since it uses less digits than its factorization.

31404545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273111.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 31404545 is about 5603.9758207901. The cubic root of 31404545 is about 315.4986475262.

Adding to 31404545 its reverse (54540413), we get a palindrome (85944958).

The spelling of 31404545 in words is "thirty-one million, four hundred four thousand, five hundred forty-five".