140310871493521 has 9 divisors (see below), whose sum is σ = 140669904240849. Its totient is φ = 139952752871184.

The previous prime is 140310871493473. The next prime is 140310871493537. The reversal of 140310871493521 is 125394178013041.

The square root of 140310871493521 is 11845289.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 21958230493521 + 118352641000000 = 4685961^2 + 10879000^2 .

It is not a de Polignac number, because 140310871493521 - 2³¹ = 140308724009873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140310811493521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4702564815 + ... + 4702594651.

Almost surely, 2^{140310871493521} is an apocalyptic number.

140310871493521 is the 11845289-th square number.

140310871493521 is the 5922645-th centered octagonal number.

It is an amenable number.

140310871493521 is a deficient number, since it is larger than the sum of its proper divisors (359032747328).

140310871493521 is an frugal number, since it uses more digits than its factorization.

140310871493521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60468 (or 30234 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 140310871493521 in words is "one hundred forty trillion, three hundred ten billion, eight hundred seventy-one million, four hundred ninety-three thousand, five hundred twenty-one".