1031231313123 has 16 divisors (see below), whose sum is σ = 1534855910016. Its totient is φ = 610454053440.

The previous prime is 1031231313083. The next prime is 1031231313181. The reversal of 1031231313123 is 3213131321301.

It is not a de Polignac number, because 1031231313123 - 2⁶ = 1031231313059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031231313093 and 1031231313102.

It is not an unprimeable number, because it can be changed into a prime (1031231353123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363364090 + ... + 363366927.

It is an arithmetic number, because the mean of its divisors is an integer number (95928494376).

Almost surely, 2^{1031231313123} is an apocalyptic number.

1031231313123 is a deficient number, since it is larger than the sum of its proper divisors (503624596893).

1031231313123 is a wasteful number, since it uses less digits than its factorization.

1031231313123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726731074.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1031231313123 its reverse (3213131321301), we get a palindrome (4244362634424).

The spelling of 1031231313123 in words is "one trillion, thirty-one billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred twenty-three".