121673731 has 2 divisors, whose sum is σ = 121673732. Its totient is φ = 121673730.

The previous prime is 121673687. The next prime is 121673737. The reversal of 121673731 is 137376121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121673731 - 2⁷ = 121673603 is a prime.

It is a super-2 number, since 2×121673731² = 29608993630920722, 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 = 121673693 and 121673702.

It is not a weakly prime, because it can be changed into another prime (121673737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60836865 + 60836866.

It is an arithmetic number, because the mean of its divisors is an integer number (60836866).

Almost surely, 2^121673731 is an apocalyptic number.

121673731 is a deficient number, since it is larger than the sum of its proper divisors (1).

121673731 is an equidigital number, since it uses as much as digits as its factorization.

121673731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 31.

The square root of 121673731 is about 11030.5816256442. The cubic root of 121673731 is about 495.5250436813.

It can be divided in two parts, 1216 and 73731, that added together give a palindrome (74947).

The spelling of 121673731 in words is "one hundred twenty-one million, six hundred seventy-three thousand, seven hundred thirty-one".