238111139 has 24 divisors (see below), whose sum is σ = 284087088. Its totient is φ = 198918720.

The previous prime is 238111127. The next prime is 238111151. The reversal of 238111139 is 931111832.

It is an interprime number because it is at equal distance from previous prime (238111127) and next prime (238111151).

It is not a de Polignac number, because 238111139 - 2⁴ = 238111123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238111739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 719204 + ... + 719534.

It is an arithmetic number, because the mean of its divisors is an integer number (11836962).

Almost surely, 2^238111139 is an apocalyptic number.

238111139 is a deficient number, since it is larger than the sum of its proper divisors (45975949).

238111139 is a wasteful number, since it uses less digits than its factorization.

238111139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 668 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 238111139 is about 15430.8502358101. The cubic root of 238111139 is about 619.8118914246.

The spelling of 238111139 in words is "two hundred thirty-eight million, one hundred eleven thousand, one hundred thirty-nine".