1031400012 has 24 divisors (see below), whose sum is σ = 2471644336. Its totient is φ = 334507968.

The previous prime is 1031399953. The next prime is 1031400023. The reversal of 1031400012 is 2100041301.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 1161043 + ... + 1161930.

Almost surely, 2^1031400012 is an apocalyptic number.

1031400012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1031400012 is an abundant number, since it is smaller than the sum of its proper divisors (1440244324).

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

1031400012 is a wasteful number, since it uses less digits than its factorization.

1031400012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323017 (or 2323015 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1031400012 is about 32115.4170454005. The cubic root of 1031400012 is about 1010.3589914266.

Adding to 1031400012 its reverse (2100041301), we get a palindrome (3131441313).

The spelling of 1031400012 in words is "one billion, thirty-one million, four hundred thousand, twelve".