238431069 has 54 divisors (see below), whose sum is σ = 382377710. Its totient is φ = 143119872.

The previous prime is 238431007. The next prime is 238431079. The reversal of 238431069 is 960134832.

It can be written as a sum of positive squares in 9 ways, for example, as 191844 + 238239225 = 438^2 + 15435^2 .

It is not a de Polignac number, because 238431069 - 2⁹ = 238430557 is a prime.

It is a super-2 number, since 2×238431069² = 113698749328965522, 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 (238431079) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2187387 + ... + 2187495.

Almost surely, 2^238431069 is an apocalyptic number.

238431069 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

238431069 is a deficient number, since it is larger than the sum of its proper divisors (143946641).

238431069 is a wasteful number, since it uses less digits than its factorization.

238431069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 238431069 is about 15441.2133266787. The cubic root of 238431069 is about 620.0893636365.

The spelling of 238431069 in words is "two hundred thirty-eight million, four hundred thirty-one thousand, sixty-nine".