1023213131123 has 2 divisors, whose sum is σ = 1023213131124. Its totient is φ = 1023213131122.

The previous prime is 1023213131117. The next prime is 1023213131201. The reversal of 1023213131123 is 3211313123201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023213131123 - 2²² = 1023208936819 is a prime.

It is a super-2 number, since 2×1023213131123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1023213131023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511606565561 + 511606565562.

It is an arithmetic number, because the mean of its divisors is an integer number (511606565562).

Almost surely, 2^{1023213131123} is an apocalyptic number.

1023213131123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023213131123 is an equidigital number, since it uses as much as digits as its factorization.

1023213131123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1023213131123 its reverse (3211313123201), we get a palindrome (4234526254324).

The spelling of 1023213131123 in words is "one trillion, twenty-three billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred twenty-three".