133431311204 has 6 divisors (see below), whose sum is σ = 233504794614. Its totient is φ = 66715655600.

The previous prime is 133431311183. The next prime is 133431311231. The reversal of 133431311204 is 402113134331.

It can be written as a sum of positive squares in only one way, i.e., 94562400100 + 38868911104 = 307510^2 + 197152^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16678913897 + ... + 16678913904.

It is an arithmetic number, because the mean of its divisors is an integer number (38917465769).

Almost surely, 2^133431311204 is an apocalyptic number.

It is an amenable number.

133431311204 is a deficient number, since it is larger than the sum of its proper divisors (100073483410).

133431311204 is a wasteful number, since it uses less digits than its factorization.

133431311204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33357827805 (or 33357827803 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 133431311204 its reverse (402113134331), we get a palindrome (535544445535).

The spelling of 133431311204 in words is "one hundred thirty-three billion, four hundred thirty-one million, three hundred eleven thousand, two hundred four".