31542143300 has 18 divisors (see below), whose sum is σ = 68446451178. Its totient is φ = 12616857280.

The previous prime is 31542143299. The next prime is 31542143377. The reversal of 31542143300 is 334124513.

It can be written as a sum of positive squares in 3 ways, for example, as 4155865156 + 27386278144 = 64466^2 + 165488^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31542143300.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157710617 + ... + 157710816.

It is an arithmetic number, because the mean of its divisors is an integer number (3802580621).

Almost surely, 2^31542143300 is an apocalyptic number.

It is an amenable number.

31542143300 is an abundant number, since it is smaller than the sum of its proper divisors (36904307878).

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

31542143300 is a wasteful number, since it uses less digits than its factorization.

31542143300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315421447 (or 315421440 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 31542143300 its reverse (334124513), we get a palindrome (31876267813).

The spelling of 31542143300 in words is "thirty-one billion, five hundred forty-two million, one hundred forty-three thousand, three hundred".