1031201123131 has 2 divisors, whose sum is σ = 1031201123132. Its totient is φ = 1031201123130.

The previous prime is 1031201123119. The next prime is 1031201123171. The reversal of 1031201123131 is 1313211021301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1031201123131 - 2⁷ = 1031201123003 is a prime.

It is a super-2 number, since 2×1031201123131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031201123099 and 1031201123108.

It is not a weakly prime, because it can be changed into another prime (1031201123101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515600561565 + 515600561566.

It is an arithmetic number, because the mean of its divisors is an integer number (515600561566).

Almost surely, 2^{1031201123131} is an apocalyptic number.

1031201123131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031201123131 is an equidigital number, since it uses as much as digits as its factorization.

1031201123131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031201123131 its reverse (1313211021301), we get a palindrome (2344412144432).

The spelling of 1031201123131 in words is "one trillion, thirty-one billion, two hundred one million, one hundred twenty-three thousand, one hundred thirty-one".