31034020 has 12 divisors (see below), whose sum is σ = 65171484. Its totient is φ = 12413600.

The previous prime is 31033999. The next prime is 31034021. The reversal of 31034020 is 2043013.

It can be written as a sum of positive squares in 2 ways, for example, as 19784704 + 11249316 = 4448^2 + 3354^2 .

It is a super-2 number, since 2×31034020² = 1926220794720800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31034021) 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, 775831 + ... + 775870.

It is an arithmetic number, because the mean of its divisors is an integer number (5430957).

Almost surely, 2^31034020 is an apocalyptic number.

It is an amenable number.

31034020 is an abundant number, since it is smaller than the sum of its proper divisors (34137464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31034020 is a wasteful number, since it uses less digits than its factorization.

31034020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551710 (or 1551708 counting only the distinct ones).

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

The square root of 31034020 is about 5570.8186112994. The cubic root of 31034020 is about 314.2529369595.

Adding to 31034020 its reverse (2043013), we get a palindrome (33077033).

The spelling of 31034020 in words is "thirty-one million, thirty-four thousand, twenty".