31545141200 has 60 divisors (see below), whose sum is σ = 78231980928. Its totient is φ = 12211017600.

The previous prime is 31545141157. The next prime is 31545141203. The reversal of 31545141200 is 214154513.

It is a self number, because there is not a number n which added to its sum of digits gives 31545141200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31545141203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1259582 + ... + 1284381.

Almost surely, 2^31545141200 is an apocalyptic number.

It is an amenable number.

31545141200 is an abundant number, since it is smaller than the sum of its proper divisors (46686839728).

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

31545141200 is a wasteful number, since it uses less digits than its factorization.

31545141200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544012 (or 2544001 counting only the distinct ones).

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

Adding to 31545141200 its reverse (214154513), we get a palindrome (31759295713).

The spelling of 31545141200 in words is "thirty-one billion, five hundred forty-five million, one hundred forty-one thousand, two hundred".