1231123311010 has 32 divisors (see below), whose sum is σ = 2231065377792. Its totient is φ = 489107419200.

The previous prime is 1231123310957. The next prime is 1231123311029. The reversal of 1231123311010 is 101133211321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9550144 + ... + 9678196.

It is an arithmetic number, because the mean of its divisors is an integer number (69720793056).

Almost surely, 2^{1231123311010} is an apocalyptic number.

1231123311010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231123311010 is a deficient number, since it is larger than the sum of its proper divisors (999942066782).

1231123311010 is a wasteful number, since it uses less digits than its factorization.

1231123311010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134578.

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

Adding to 1231123311010 its reverse (101133211321), we get a palindrome (1332256522331).

The spelling of 1231123311010 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-three million, three hundred eleven thousand, ten".