1031131121311 has 8 divisors (see below), whose sum is σ = 1033506751680. Its totient is φ = 1028756012928.

The previous prime is 1031131121303. The next prime is 1031131121341. The reversal of 1031131121311 is 1131211311301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1031131121311 - 2³ = 1031131121303 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 (1031131121341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3973050 + ... + 4224616.

It is an arithmetic number, because the mean of its divisors is an integer number (129188343960).

Almost surely, 2^{1031131121311} is an apocalyptic number.

1031131121311 is a deficient number, since it is larger than the sum of its proper divisors (2375630369).

1031131121311 is an equidigital number, since it uses as much as digits as its factorization.

1031131121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260993.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 1031131121311 its reverse (1131211311301), we get a palindrome (2162342432612).

The spelling of 1031131121311 in words is "one trillion, thirty-one billion, one hundred thirty-one million, one hundred twenty-one thousand, three hundred eleven".