1020320011131 has 4 divisors (see below), whose sum is σ = 1360426681512. Its totient is φ = 680213340752.

The previous prime is 1020320011127. The next prime is 1020320011147. The reversal of 1020320011131 is 1311100230201.

It is a happy number.

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 1020320011131 - 2² = 1020320011127 is a prime.

It is a super-2 number, since 2×1020320011131² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020320011131.

It is not an unprimeable number, because it can be changed into a prime (1020320011181) 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, 170053335186 + ... + 170053335191.

It is an arithmetic number, because the mean of its divisors is an integer number (340106670378).

Almost surely, 2^{1020320011131} is an apocalyptic number.

1020320011131 is a deficient number, since it is larger than the sum of its proper divisors (340106670381).

1020320011131 is an equidigital number, since it uses as much as digits as its factorization.

1020320011131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340106670380.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1020320011131 its reverse (1311100230201), we get a palindrome (2331420241332).

The spelling of 1020320011131 in words is "one trillion, twenty billion, three hundred twenty million, eleven thousand, one hundred thirty-one".