420121311231 has 8 divisors (see below), whose sum is σ = 560407334704. Its totient is φ = 279958080960.

The previous prime is 420121311223. The next prime is 420121311293. The reversal of 420121311231 is 132113121024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420121311231 - 2³ = 420121311223 is a prime.

It is a super-2 number, since 2×420121311231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420121311198 and 420121311207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420121311131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30690316 + ... + 30704001.

It is an arithmetic number, because the mean of its divisors is an integer number (70050916838).

Almost surely, 2^420121311231 is an apocalyptic number.

420121311231 is a deficient number, since it is larger than the sum of its proper divisors (140286023473).

420121311231 is a wasteful number, since it uses less digits than its factorization.

420121311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61396601.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 420121311231 its reverse (132113121024), we get a palindrome (552234432255).

The spelling of 420121311231 in words is "four hundred twenty billion, one hundred twenty-one million, three hundred eleven thousand, two hundred thirty-one".