1023213131131 has 4 divisors (see below), whose sum is σ = 1023599689552. Its totient is φ = 1022826572712.

The previous prime is 1023213131123. The next prime is 1023213131201. The reversal of 1023213131131 is 1311313123201.

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 1023213131131 - 2³ = 1023213131123 is a prime.

It is a super-2 number, since 2×1023213131131² (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 (1023213131111) 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, 193275240 + ... + 193280533.

It is an arithmetic number, because the mean of its divisors is an integer number (255899922388).

Almost surely, 2^{1023213131131} is an apocalyptic number.

1023213131131 is a deficient number, since it is larger than the sum of its proper divisors (386558421).

1023213131131 is an equidigital number, since it uses as much as digits as its factorization.

1023213131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386558420.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1023213131131 its reverse (1311313123201), we get a palindrome (2334526254332).

The spelling of 1023213131131 in words is "one trillion, twenty-three billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred thirty-one".