403212311231 has 4 divisors (see below), whose sum is σ = 405123270264. Its totient is φ = 401301352200.

The previous prime is 403212311209. The next prime is 403212311261. The reversal of 403212311231 is 132113212304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 403212311231 - 2⁶ = 403212311167 is a prime.

It is a super-2 number, since 2×403212311231² (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 = 403212311197 and 403212311206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403212311261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955479200 + ... + 955479621.

It is an arithmetic number, because the mean of its divisors is an integer number (101280817566).

Almost surely, 2^403212311231 is an apocalyptic number.

403212311231 is a deficient number, since it is larger than the sum of its proper divisors (1910959033).

403212311231 is a wasteful number, since it uses less digits than its factorization.

403212311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910959032.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 403212311231 its reverse (132113212304), we get a palindrome (535325523535).

The spelling of 403212311231 in words is "four hundred three billion, two hundred twelve million, three hundred eleven thousand, two hundred thirty-one".