140031013012421 has 4 divisors (see below), whose sum is σ = 140046487771500. Its totient is φ = 140015538253344.

The previous prime is 140031013012411. The next prime is 140031013012481. The reversal of 140031013012421 is 124210310130041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109338183120100 + 30692829892321 = 10456490^2 + 5540111^2 .

It is a cyclic number.

It is not a de Polignac number, because 140031013012421 - 2³⁴ = 140013833143237 is a prime.

It is a super-3 number, since 3×140031013012421³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140031013012411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7737365966 + ... + 7737384063.

It is an arithmetic number, because the mean of its divisors is an integer number (35011621942875).

Almost surely, 2^{140031013012421} is an apocalyptic number.

It is an amenable number.

140031013012421 is a deficient number, since it is larger than the sum of its proper divisors (15474759079).

140031013012421 is an equidigital number, since it uses as much as digits as its factorization.

140031013012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15474759078.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 140031013012421 its reverse (124210310130041), we get a palindrome (264241323142462).

The spelling of 140031013012421 in words is "one hundred forty trillion, thirty-one billion, thirteen million, twelve thousand, four hundred twenty-one".