123151432 has 8 divisors (see below), whose sum is σ = 230908950. Its totient is φ = 61575712.

The previous prime is 123151411. The next prime is 123151433. The reversal of 123151432 is 234151321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 109118916 + 14032516 = 10446^2 + 3746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (123151433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7696957 + ... + 7696972.

Almost surely, 2^123151432 is an apocalyptic number.

It is an amenable number.

123151432 is a deficient number, since it is larger than the sum of its proper divisors (107757518).

123151432 is a wasteful number, since it uses less digits than its factorization.

123151432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393935 (or 15393931 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 123151432 is about 11097.3614882097. The cubic root of 123151432 is about 497.5229917911.

The spelling of 123151432 in words is "one hundred twenty-three million, one hundred fifty-one thousand, four hundred thirty-two".