311545142 has 16 divisors (see below), whose sum is σ = 480386592. Its totient is φ = 151442880.

The previous prime is 311545127. The next prime is 311545151. The reversal of 311545142 is 241545113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17543 + ... + 30509.

It is an arithmetic number, because the mean of its divisors is an integer number (30024162).

Almost surely, 2^311545142 is an apocalyptic number.

311545142 is a deficient number, since it is larger than the sum of its proper divisors (168841450).

311545142 is a wasteful number, since it uses less digits than its factorization.

311545142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13303.

The product of its digits is 2400, while the sum is 26.

The square root of 311545142 is about 17650.6414047762. The cubic root of 311545142 is about 677.9125300848.

The spelling of 311545142 in words is "three hundred eleven million, five hundred forty-five thousand, one hundred forty-two".