311750142 has 64 divisors (see below), whose sum is σ = 727211520. Its totient is φ = 88140800.

The previous prime is 311750099. The next prime is 311750161. The reversal of 311750142 is 241057113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59734 + ... + 64742.

It is an arithmetic number, because the mean of its divisors is an integer number (11362680).

Almost surely, 2^311750142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311750142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363605760).

311750142 is an abundant number, since it is smaller than the sum of its proper divisors (415461378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311750142 is a wasteful number, since it uses less digits than its factorization.

311750142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 311750142 is about 17656.4476042040. The cubic root of 311750142 is about 678.0611886893.

The spelling of 311750142 in words is "three hundred eleven million, seven hundred fifty thousand, one hundred forty-two".