311504550143042 has 64 divisors (see below), whose sum is σ = 515317345320960. Its totient is φ = 140657106268800.

The previous prime is 311504550142997. The next prime is 311504550143047. The reversal of 311504550143042 is 240341055405113.

It is a super-2 number, since 2×311504550143042² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 311504550142987 and 311504550143005.

It is not an unprimeable number, because it can be changed into a prime (311504550143047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1947103358 + ... + 1947263334.

It is an arithmetic number, because the mean of its divisors is an integer number (8051833520640).

Almost surely, 2^{311504550143042} is an apocalyptic number.

311504550143042 is a deficient number, since it is larger than the sum of its proper divisors (203812795177918).

311504550143042 is a wasteful number, since it uses less digits than its factorization.

311504550143042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184767.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 311504550143042 in words is "three hundred eleven trillion, five hundred four billion, five hundred fifty million, one hundred forty-three thousand, forty-two".