1010020013231 has 4 divisors (see below), whose sum is σ = 1033508850792. Its totient is φ = 986531175672.

The previous prime is 1010020013227. The next prime is 1010020013287. The reversal of 1010020013231 is 1323100200101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1010020013231 - 2² = 1010020013227 is a prime.

It is a super-2 number, since 2×1010020013231² (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 (1010020016231) 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, 11744418716 + ... + 11744418801.

It is an arithmetic number, because the mean of its divisors is an integer number (258377212698).

Almost surely, 2^{1010020013231} is an apocalyptic number.

1010020013231 is a deficient number, since it is larger than the sum of its proper divisors (23488837561).

1010020013231 is an equidigital number, since it uses as much as digits as its factorization.

1010020013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23488837560.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1010020013231 its reverse (1323100200101), we get a palindrome (2333120213332).

The spelling of 1010020013231 in words is "one trillion, ten billion, twenty million, thirteen thousand, two hundred thirty-one".