1213203023 has 8 divisors (see below), whose sum is σ = 1257260400. Its totient is φ = 1169293888.

The previous prime is 1213202993. The next prime is 1213203031. The reversal of 1213203023 is 3203023121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213203023 - 2²² = 1209008719 is a prime.

It is a super-3 number, since 3×1213203023³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213202992 and 1213203010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213203083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20261 + ... + 53262.

It is an arithmetic number, because the mean of its divisors is an integer number (157157550).

Almost surely, 2^1213203023 is an apocalyptic number.

1213203023 is a deficient number, since it is larger than the sum of its proper divisors (44057377).

1213203023 is an equidigital number, since it uses as much as digits as its factorization.

1213203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74121.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1213203023 is about 34831.0640520786. The cubic root of 1213203023 is about 1066.5416696085.

Adding to 1213203023 its reverse (3203023121), we get a palindrome (4416226144).

It can be divided in two parts, 121 and 3203023, that multiplied together give a palindrome (387565783).

The spelling of 1213203023 in words is "one billion, two hundred thirteen million, two hundred three thousand, twenty-three".