421531151031 has 16 divisors (see below), whose sum is σ = 624599601120. Its totient is φ = 280971714240.

The previous prime is 421531151029. The next prime is 421531151059. The reversal of 421531151031 is 130151135124.

421531151031 is a `hidden beast` number, since 4 + 21 + 531 + 1 + 5 + 103 + 1 = 666.

It is not a de Polignac number, because 421531151031 - 2¹ = 421531151029 is a prime.

It is a super-2 number, since 2×421531151031² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 421531150986 and 421531151004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421531131031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1204710 + ... + 1514723.

It is an arithmetic number, because the mean of its divisors is an integer number (39037475070).

Almost surely, 2^421531151031 is an apocalyptic number.

421531151031 is a deficient number, since it is larger than the sum of its proper divisors (203068450089).

421531151031 is a wasteful number, since it uses less digits than its factorization.

421531151031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725183 (or 2725177 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 421531151031 its reverse (130151135124), we get a palindrome (551682286155).

The spelling of 421531151031 in words is "four hundred twenty-one billion, five hundred thirty-one million, one hundred fifty-one thousand, thirty-one".