1010400312 has 16 divisors (see below), whose sum is σ = 2526000840. Its totient is φ = 336800096.

The previous prime is 1010400301. The next prime is 1010400317. The reversal of 1010400312 is 2130040101.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010400317) 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, 21049983 + ... + 21050030.

Almost surely, 2^1010400312 is an apocalyptic number.

1010400312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1010400312 is an abundant number, since it is smaller than the sum of its proper divisors (1515600528).

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

1010400312 is a wasteful number, since it uses less digits than its factorization.

1010400312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42100022 (or 42100018 counting only the distinct ones).

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

The square root of 1010400312 is about 31786.7946166329. The cubic root of 1010400312 is about 1003.4548211323.

Adding to 1010400312 its reverse (2130040101), we get a palindrome (3140440413).

The spelling of 1010400312 in words is "one billion, ten million, four hundred thousand, three hundred twelve".