1203012331123 has 4 divisors (see below), whose sum is σ = 1204871701680. Its totient is φ = 1201152960568.

The previous prime is 1203012331111. The next prime is 1203012331127. The reversal of 1203012331123 is 3211332103021.

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

It is a cyclic number.

It is not a de Polignac number, because 1203012331123 - 2⁵ = 1203012331091 is a prime.

It is a super-2 number, since 2×1203012331123² (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 = 1203012331094 and 1203012331103.

It is not an unprimeable number, because it can be changed into a prime (1203012331127) 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, 929684308 + ... + 929685601.

It is an arithmetic number, because the mean of its divisors is an integer number (301217925420).

Almost surely, 2^{1203012331123} is an apocalyptic number.

1203012331123 is a deficient number, since it is larger than the sum of its proper divisors (1859370557).

1203012331123 is an equidigital number, since it uses as much as digits as its factorization.

1203012331123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859370556.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1203012331123 its reverse (3211332103021), we get a palindrome (4414344434144).

The spelling of 1203012331123 in words is "one trillion, two hundred three billion, twelve million, three hundred thirty-one thousand, one hundred twenty-three".