312042130220 has 48 divisors (see below), whose sum is σ = 698327820288. Its totient is φ = 116849810880.

The previous prime is 312042130187. The next prime is 312042130273. The reversal of 312042130220 is 22031240213.

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

It is a junction number, because it is equal to n+sod(n) for n = 312042130192 and 312042130201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7194896 + ... + 7238135.

It is an arithmetic number, because the mean of its divisors is an integer number (14548496256).

Almost surely, 2^312042130220 is an apocalyptic number.

It is an amenable number.

312042130220 is an abundant number, since it is smaller than the sum of its proper divisors (386285690068).

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

312042130220 is a wasteful number, since it uses less digits than its factorization.

312042130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14433110 (or 14433108 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 312042130220 its reverse (22031240213), we get a palindrome (334073370433).

The spelling of 312042130220 in words is "three hundred twelve billion, forty-two million, one hundred thirty thousand, two hundred twenty".