421353131 has 2 divisors, whose sum is σ = 421353132. Its totient is φ = 421353130.

The previous prime is 421353103. The next prime is 421353181. The reversal of 421353131 is 131353124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421353131 - 2²² = 417158827 is a prime.

It is a super-2 number, since 2×421353131² = 355076922007006322, 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 = 421353097 and 421353106.

It is not a weakly prime, because it can be changed into another prime (421353181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210676565 + 210676566.

It is an arithmetic number, because the mean of its divisors is an integer number (210676566).

Almost surely, 2^421353131 is an apocalyptic number.

421353131 is a deficient number, since it is larger than the sum of its proper divisors (1).

421353131 is an equidigital number, since it uses as much as digits as its factorization.

421353131 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 421353131 is about 20526.8880008636. Note that the first 3 decimals coincide. The cubic root of 421353131 is about 749.6906166898.

The spelling of 421353131 in words is "four hundred twenty-one million, three hundred fifty-three thousand, one hundred thirty-one".