140312531544 has 64 divisors (see below), whose sum is σ = 354865674240. Its totient is φ = 46229389440.

The previous prime is 140312531543. The next prime is 140312531581. The reversal of 140312531544 is 445135213041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140312531543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622207 + ... + 817169.

It is an arithmetic number, because the mean of its divisors is an integer number (5544776160).

Almost surely, 2^140312531544 is an apocalyptic number.

It is an amenable number.

140312531544 is an abundant number, since it is smaller than the sum of its proper divisors (214553142696).

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

140312531544 is a wasteful number, since it uses less digits than its factorization.

140312531544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195320 (or 195316 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 140312531544 its reverse (445135213041), we get a palindrome (585447744585).

The spelling of 140312531544 in words is "one hundred forty billion, three hundred twelve million, five hundred thirty-one thousand, five hundred forty-four".