1040020312 has 16 divisors (see below), whose sum is σ = 1968264360. Its totient is φ = 515149824.

The previous prime is 1040020307. The next prime is 1040020337. The reversal of 1040020312 is 2130200401.

It is a junction number, because it is equal to n+sod(n) for n = 1040020292 and 1040020301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606633 + ... + 608344.

Almost surely, 2^1040020312 is an apocalyptic number.

It is an amenable number.

1040020312 is a deficient number, since it is larger than the sum of its proper divisors (928244048).

1040020312 is a wasteful number, since it uses less digits than its factorization.

1040020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215090 (or 1215086 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1040020312 is about 32249.3459158477. The cubic root of 1040020312 is about 1013.1659997047.

Adding to 1040020312 its reverse (2130200401), we get a palindrome (3170220713).

The spelling of 1040020312 in words is "one billion, forty million, twenty thousand, three hundred twelve".