232129381 has 8 divisors (see below), whose sum is σ = 258620544. Its totient is φ = 206536320.

The previous prime is 232129309. The next prime is 232129393. The reversal of 232129381 is 183921232.

232129381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232129381 is a prime.

It is a super-2 number, since 2×232129381² = 107768099046886322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232129081) 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, 223980 + ... + 225013.

It is an arithmetic number, because the mean of its divisors is an integer number (32327568).

Almost surely, 2^232129381 is an apocalyptic number.

It is an amenable number.

232129381 is a deficient number, since it is larger than the sum of its proper divisors (26491163).

232129381 is a wasteful number, since it uses less digits than its factorization.

232129381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449051.

The product of its digits is 5184, while the sum is 31.

The square root of 232129381 is about 15235.7927591576. The cubic root of 232129381 is about 614.5775678826.

The spelling of 232129381 in words is "two hundred thirty-two million, one hundred twenty-nine thousand, three hundred eighty-one".