31230004 has 12 divisors (see below), whose sum is σ = 58856644. Its totient is φ = 14413824.

The previous prime is 31229999. The next prime is 31230029. The reversal of 31230004 is 40003213.

It can be written as a sum of positive squares in 2 ways, for example, as 17892900 + 13337104 = 4230^2 + 3652^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300237 + ... + 300340.

Almost surely, 2^31230004 is an apocalyptic number.

It is an amenable number.

31230004 is a deficient number, since it is larger than the sum of its proper divisors (27626640).

31230004 is a wasteful number, since it uses less digits than its factorization.

31230004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600594 (or 600592 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 31230004 is about 5588.3811609446. The cubic root of 31230004 is about 314.9130657891.

Adding to 31230004 its reverse (40003213), we get a palindrome (71233217).

The spelling of 31230004 in words is "thirty-one million, two hundred thirty thousand, four".