312233122440 has 128 divisors (see below), whose sum is σ = 1040905036800. Its totient is φ = 83251929600.

The previous prime is 312233122429. The next prime is 312233122457. The reversal of 312233122440 is 44221332213.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13597609 + ... + 13620551.

It is an arithmetic number, because the mean of its divisors is an integer number (8132070600).

Almost surely, 2^312233122440 is an apocalyptic number.

312233122440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312233122440 is an abundant number, since it is smaller than the sum of its proper divisors (728671914360).

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

312233122440 is a wasteful number, since it uses less digits than its factorization.

312233122440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35564 (or 35554 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 312233122440 its reverse (44221332213), we get a palindrome (356454454653).

The spelling of 312233122440 in words is "three hundred twelve billion, two hundred thirty-three million, one hundred twenty-two thousand, four hundred forty".