1311010021031 has 8 divisors (see below), whose sum is σ = 1368815683200. Its totient is φ = 1253271461112.

The previous prime is 1311010021007. The next prime is 1311010021051. The reversal of 1311010021031 is 1301200101131.

It is a happy number.

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 1311010021031 - 2⁶ = 1311010020967 is a prime.

It is a super-2 number, since 2×1311010021031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311010020997 and 1311010021015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311010021051) 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, 16735625 + ... + 16813778.

It is an arithmetic number, because the mean of its divisors is an integer number (171101960400).

Almost surely, 2^{1311010021031} is an apocalyptic number.

1311010021031 is a deficient number, since it is larger than the sum of its proper divisors (57805662169).

1311010021031 is a wasteful number, since it uses less digits than its factorization.

1311010021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33551125.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1311010021031 its reverse (1301200101131), we get a palindrome (2612210122162).

The spelling of 1311010021031 in words is "one trillion, three hundred eleven billion, ten million, twenty-one thousand, thirty-one".