312203021131 has 8 divisors (see below), whose sum is σ = 326347617024. Its totient is φ = 298105971240.

The previous prime is 312203021101. The next prime is 312203021161. The reversal of 312203021131 is 131120302213.

It is an interprime number because it is at equal distance from previous prime (312203021101) and next prime (312203021161).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312203021131 - 2⁵ = 312203021099 is a prime.

It is a super-2 number, since 2×312203021131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312203021099 and 312203021108.

It is not an unprimeable number, because it can be changed into a prime (312203021101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11873071 + ... + 11899336.

It is an arithmetic number, because the mean of its divisors is an integer number (40793452128).

Almost surely, 2^312203021131 is an apocalyptic number.

312203021131 is a deficient number, since it is larger than the sum of its proper divisors (14144595893).

312203021131 is a wasteful number, since it uses less digits than its factorization.

312203021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23773001.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 312203021131 its reverse (131120302213), we get a palindrome (443323323344).

The spelling of 312203021131 in words is "three hundred twelve billion, two hundred three million, twenty-one thousand, one hundred thirty-one".