311431054 has 8 divisors (see below), whose sum is σ = 509614488. Its totient is φ = 141559560.

The previous prime is 311431037. The next prime is 311431091. The reversal of 311431054 is 450134113.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 14155957 = 311431054 / (3 + 1 + 1 + 4 + 3 + 1 + 0 + 5 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7077957 + ... + 7078000.

It is an arithmetic number, because the mean of its divisors is an integer number (63701811).

Almost surely, 2^311431054 is an apocalyptic number.

311431054 is a deficient number, since it is larger than the sum of its proper divisors (198183434).

311431054 is a wasteful number, since it uses less digits than its factorization.

311431054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14155970.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 311431054 is about 17647.4092716183. The cubic root of 311431054 is about 677.8297693363.

Adding to 311431054 its reverse (450134113), we get a palindrome (761565167).

The spelling of 311431054 in words is "three hundred eleven million, four hundred thirty-one thousand, fifty-four".