312210142040 has 32 divisors (see below), whose sum is σ = 705622942080. Its totient is φ = 124324035072.

The previous prime is 312210142031. The next prime is 312210142061. The reversal of 312210142040 is 40241012213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17491649 + ... + 17509488.

It is an arithmetic number, because the mean of its divisors is an integer number (22050716940).

Almost surely, 2^312210142040 is an apocalyptic number.

It is an amenable number.

312210142040 is an abundant number, since it is smaller than the sum of its proper divisors (393412800040).

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

312210142040 is a wasteful number, since it uses less digits than its factorization.

312210142040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35001371 (or 35001367 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 312210142040 its reverse (40241012213), we get a palindrome (352451154253).

The spelling of 312210142040 in words is "three hundred twelve billion, two hundred ten million, one hundred forty-two thousand, forty".