121652831 has 4 divisors (see below), whose sum is σ = 121979352. Its totient is φ = 121326312.

The previous prime is 121652827. The next prime is 121652899. The reversal of 121652831 is 138256121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138256121 = 17 ⋅8132713.

It is a cyclic number.

It is not a de Polignac number, because 121652831 - 2² = 121652827 is a prime.

It is a super-2 number, since 2×121652831² = 29598822580629122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121652794 and 121652803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121652431) 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 3 ways as a sum of consecutive naturals, for example, 162701 + ... + 163446.

It is an arithmetic number, because the mean of its divisors is an integer number (30494838).

Almost surely, 2^121652831 is an apocalyptic number.

121652831 is a deficient number, since it is larger than the sum of its proper divisors (326521).

121652831 is an equidigital number, since it uses as much as digits as its factorization.

121652831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326520.

The product of its digits is 2880, while the sum is 29.

The square root of 121652831 is about 11029.6342187763. The cubic root of 121652831 is about 495.4966698042.

The spelling of 121652831 in words is "one hundred twenty-one million, six hundred fifty-two thousand, eight hundred thirty-one".