1223151432 has 64 divisors (see below), whose sum is σ = 3084480000. Its totient is φ = 404189184.

The previous prime is 1223151421. The next prime is 1223151463. The reversal of 1223151432 is 2341513221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2402794 + ... + 2403302.

It is an arithmetic number, because the mean of its divisors is an integer number (48195000).

Almost surely, 2^1223151432 is an apocalyptic number.

1223151432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223151432 is an abundant number, since it is smaller than the sum of its proper divisors (1861328568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223151432 is a wasteful number, since it uses less digits than its factorization.

1223151432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1186 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1223151432 is about 34973.5819154973. The cubic root of 1223151432 is about 1069.4489933865.

Adding to 1223151432 its reverse (2341513221), we get a palindrome (3564664653).

The spelling of 1223151432 in words is "one billion, two hundred twenty-three million, one hundred fifty-one thousand, four hundred thirty-two".