31404002 has 12 divisors (see below), whose sum is σ = 54796950. Its totient is φ = 13458816.

The previous prime is 31403969. The next prime is 31404007. The reversal of 31404002 is 20040413.

It can be written as a sum of positive squares in only one way, i.e., 24216241 + 7187761 = 4921^2 + 2681^2 .

It is a super-2 number, since 2×31404002² = 1972422683232008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (31404007) 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 5 ways as a sum of consecutive naturals, for example, 160127 + ... + 160322.

Almost surely, 2^31404002 is an apocalyptic number.

31404002 is a deficient number, since it is larger than the sum of its proper divisors (23392948).

31404002 is a wasteful number, since it uses less digits than its factorization.

31404002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320465 (or 320458 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 31404002 is about 5603.9273728342. The cubic root of 31404002 is about 315.4968291403.

Adding to 31404002 its reverse (20040413), we get a palindrome (51444415).

The spelling of 31404002 in words is "thirty-one million, four hundred four thousand, two".