121435313 has 2 divisors, whose sum is σ = 121435314. Its totient is φ = 121435312.

The previous prime is 121435309. The next prime is 121435343. The reversal of 121435313 is 313534121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94633984 + 26801329 = 9728^2 + 5177^2 .

It is a cyclic number.

It is not a de Polignac number, because 121435313 - 2² = 121435309 is a prime.

It is a super-3 number, since 3×121435313³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (121435343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60717656 + 60717657.

It is an arithmetic number, because the mean of its divisors is an integer number (60717657).

Almost surely, 2^121435313 is an apocalyptic number.

It is an amenable number.

121435313 is a deficient number, since it is larger than the sum of its proper divisors (1).

121435313 is an equidigital number, since it uses as much as digits as its factorization.

121435313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 121435313 is about 11019.7691899604. The cubic root of 121435313 is about 495.2011738837.

Adding to 121435313 its reverse (313534121), we get a palindrome (434969434).

The spelling of 121435313 in words is "one hundred twenty-one million, four hundred thirty-five thousand, three hundred thirteen".