1023120421131 has 4 divisors (see below), whose sum is σ = 1364160561512. Its totient is φ = 682080280752.

The previous prime is 1023120421129. The next prime is 1023120421163. The reversal of 1023120421131 is 1311240213201.

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

It is not a de Polignac number, because 1023120421131 - 2¹ = 1023120421129 is a prime.

It is a super-2 number, since 2×1023120421131² (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 = 1023120421098 and 1023120421107.

It is not an unprimeable number, because it can be changed into a prime (1023120441131) 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, 170520070186 + ... + 170520070191.

It is an arithmetic number, because the mean of its divisors is an integer number (341040140378).

Almost surely, 2^{1023120421131} is an apocalyptic number.

1023120421131 is a deficient number, since it is larger than the sum of its proper divisors (341040140381).

1023120421131 is an equidigital number, since it uses as much as digits as its factorization.

1023120421131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341040140380.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1023120421131 its reverse (1311240213201), we get a palindrome (2334360634332).

The spelling of 1023120421131 in words is "one trillion, twenty-three billion, one hundred twenty million, four hundred twenty-one thousand, one hundred thirty-one".