1213032123 has 24 divisors (see below), whose sum is σ = 1778150400. Its totient is φ = 796736304.

The previous prime is 1213032103. The next prime is 1213032137. The reversal of 1213032123 is 3212303121.

It is not a de Polignac number, because 1213032123 - 2⁸ = 1213031867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213032096 and 1213032105.

It is not an unprimeable number, because it can be changed into a prime (1213032103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387358 + ... + 390476.

It is an arithmetic number, because the mean of its divisors is an integer number (74089600).

Almost surely, 2^1213032123 is an apocalyptic number.

1213032123 is a deficient number, since it is larger than the sum of its proper divisors (565118277).

1213032123 is a wasteful number, since it uses less digits than its factorization.

1213032123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751 (or 3748 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1213032123 is about 34828.6106958058. The cubic root of 1213032123 is about 1066.4915871608.

Adding to 1213032123 its reverse (3212303121), we get a palindrome (4425335244).

It can be divided in two parts, 12130 and 32123, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 1213032123 in words is "one billion, two hundred thirteen million, thirty-two thousand, one hundred twenty-three".