1011020023231 has 8 divisors (see below), whose sum is σ = 1033942783104. Its totient is φ = 988327643160.

The previous prime is 1011020023219. The next prime is 1011020023259. The reversal of 1011020023231 is 1323200201101.

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 1011020023231 - 2¹⁷ = 1011019892159 is a prime.

It is a super-2 number, since 2×1011020023231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011020023031) 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, 57586075 + ... + 57603628.

It is an arithmetic number, because the mean of its divisors is an integer number (129242847888).

Almost surely, 2^{1011020023231} is an apocalyptic number.

1011020023231 is a deficient number, since it is larger than the sum of its proper divisors (22922759873).

1011020023231 is a wasteful number, since it uses less digits than its factorization.

1011020023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115189901.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1011020023231 its reverse (1323200201101), we get a palindrome (2334220224332).

The spelling of 1011020023231 in words is "one trillion, eleven billion, twenty million, twenty-three thousand, two hundred thirty-one".