1233123412 has 6 divisors (see below), whose sum is σ = 2157965978. Its totient is φ = 616561704.

The previous prime is 1233123401. The next prime is 1233123467. The reversal of 1233123412 is 2143213321.

It can be written as a sum of positive squares in only one way, i.e., 737882896 + 495240516 = 27164^2 + 22254^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154140423 + ... + 154140430.

Almost surely, 2^1233123412 is an apocalyptic number.

It is an amenable number.

1233123412 is a deficient number, since it is larger than the sum of its proper divisors (924842566).

1233123412 is a wasteful number, since it uses less digits than its factorization.

1233123412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308280857 (or 308280855 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 1233123412 is about 35115.8569879762. The cubic root of 1233123412 is about 1072.3474279045.

Adding to 1233123412 its reverse (2143213321), we get a palindrome (3376336733).

The spelling of 1233123412 in words is "one billion, two hundred thirty-three million, one hundred twenty-three thousand, four hundred twelve".