1331235023141 has 4 divisors (see below), whose sum is σ = 1332880555500. Its totient is φ = 1329589490784.

The previous prime is 1331235023137. The next prime is 1331235023147. The reversal of 1331235023141 is 1413205321331.

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 1180590902500 + 150644120641 = 1086550^2 + 388129^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331235023141 - 2² = 1331235023137 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 (1331235023147) 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, 822764966 + ... + 822766583.

It is an arithmetic number, because the mean of its divisors is an integer number (333220138875).

Almost surely, 2^{1331235023141} is an apocalyptic number.

It is an amenable number.

1331235023141 is a deficient number, since it is larger than the sum of its proper divisors (1645532359).

1331235023141 is an equidigital number, since it uses as much as digits as its factorization.

1331235023141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645532358.

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 1331235023141 in words is "one trillion, three hundred thirty-one billion, two hundred thirty-five million, twenty-three thousand, one hundred forty-one".