311051421 has 24 divisors (see below), whose sum is σ = 467105184. Its totient is φ = 206848080.

The previous prime is 311051401. The next prime is 311051443. The reversal of 311051421 is 124150113.

It is not a de Polignac number, because 311051421 - 2²⁶ = 243942557 is a prime.

It is a super-2 number, since 2×311051421² = 193505973012238482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311051394 and 311051403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311051401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112111 + ... + 114851.

It is an arithmetic number, because the mean of its divisors is an integer number (19462716).

Almost surely, 2^311051421 is an apocalyptic number.

It is an amenable number.

311051421 is a deficient number, since it is larger than the sum of its proper divisors (156053763).

311051421 is an equidigital number, since it uses as much as digits as its factorization.

311051421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223 (or 3211 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 311051421 is about 17636.6499369920. The cubic root of 311051421 is about 677.5542335728.

The spelling of 311051421 in words is "three hundred eleven million, fifty-one thousand, four hundred twenty-one".