1001231331131 has 16 divisors (see below), whose sum is σ = 1058818467840. Its totient is φ = 944134600320.

The previous prime is 1001231331103. The next prime is 1001231331143. The reversal of 1001231331131 is 1311331321001.

It is a cyclic number.

It is not a de Polignac number, because 1001231331131 - 2¹⁸ = 1001231068987 is a prime.

It is a super-2 number, since 2×1001231331131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001231331031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35199491 + ... + 35227923.

It is an arithmetic number, because the mean of its divisors is an integer number (66176154240).

Almost surely, 2^{1001231331131} is an apocalyptic number.

1001231331131 is a deficient number, since it is larger than the sum of its proper divisors (57587136709).

1001231331131 is a wasteful number, since it uses less digits than its factorization.

1001231331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36986.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1001231331131 its reverse (1311331321001), we get a palindrome (2312562652132).

The spelling of 1001231331131 in words is "one trillion, one billion, two hundred thirty-one million, three hundred thirty-one thousand, one hundred thirty-one".