31145002 has 16 divisors (see below), whose sum is σ = 54145152. Its totient is φ = 13159440.

The previous prime is 31144963. The next prime is 31145011. The reversal of 31145002 is 20054113.

It is a super-2 number, since 2×31145002² = 1940022299160008, which contains 22 as substring.

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, 14673 + ... + 16660.

It is an arithmetic number, because the mean of its divisors is an integer number (3384072).

Almost surely, 2^31145002 is an apocalyptic number.

31145002 is a deficient number, since it is larger than the sum of its proper divisors (23000150).

31145002 is a wasteful number, since it uses less digits than its factorization.

31145002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31413.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 31145002 is about 5580.7707353017. The cubic root of 31145002 is about 314.6270954640.

Adding to 31145002 its reverse (20054113), we get a palindrome (51199115).

The spelling of 31145002 in words is "thirty-one million, one hundred forty-five thousand, two".