118271731 has 2 divisors, whose sum is σ = 118271732. Its totient is φ = 118271730.

The previous prime is 118271723. The next prime is 118271759. The reversal of 118271731 is 137172811.

It is a weak prime.

It is an emirp because it is prime and its reverse (137172811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118271731 - 2³ = 118271723 is a prime.

It is a super-2 number, since 2×118271731² = 27976404707472722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 118271693 and 118271702.

It is not a weakly prime, because it can be changed into another prime (118271761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59135865 + 59135866.

It is an arithmetic number, because the mean of its divisors is an integer number (59135866).

Almost surely, 2^118271731 is an apocalyptic number.

118271731 is a deficient number, since it is larger than the sum of its proper divisors (1).

118271731 is an equidigital number, since it uses as much as digits as its factorization.

118271731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 31.

The square root of 118271731 is about 10875.2807320087. The cubic root of 118271731 is about 490.8630230298.

The spelling of 118271731 in words is "one hundred eighteen million, two hundred seventy-one thousand, seven hundred thirty-one".