140931035261 has 4 divisors (see below), whose sum is σ = 143590111452. Its totient is φ = 138271959072.

The previous prime is 140931035251. The next prime is 140931035269. The reversal of 140931035261 is 162530139041.

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 67278503161 + 73652532100 = 259381^2 + 271390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140931035261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140931035269) 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, 1329538016 + ... + 1329538121.

It is an arithmetic number, because the mean of its divisors is an integer number (35897527863).

Almost surely, 2^140931035261 is an apocalyptic number.

It is an amenable number.

140931035261 is a deficient number, since it is larger than the sum of its proper divisors (2659076191).

140931035261 is an equidigital number, since it uses as much as digits as its factorization.

140931035261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659076190.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 140931035261 in words is "one hundred forty billion, nine hundred thirty-one million, thirty-five thousand, two hundred sixty-one".