311202421 has 8 divisors (see below), whose sum is σ = 314481024. Its totient is φ = 307937760.

The previous prime is 311202407. The next prime is 311202427. The reversal of 311202421 is 124202113.

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 311202421 - 2¹⁵ = 311169653 is a prime.

It is a super-2 number, since 2×311202421² = 193693893672522482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311202395 and 311202404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311202427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44841 + ... + 51313.

It is an arithmetic number, because the mean of its divisors is an integer number (39310128).

Almost surely, 2^311202421 is an apocalyptic number.

It is an amenable number.

311202421 is a deficient number, since it is larger than the sum of its proper divisors (3278603).

311202421 is a wasteful number, since it uses less digits than its factorization.

311202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 311202421 is about 17640.9302759237. The cubic root of 311202421 is about 677.6638554673.

Adding to 311202421 its reverse (124202113), we get a palindrome (435404534).

The spelling of 311202421 in words is "three hundred eleven million, two hundred two thousand, four hundred twenty-one".