31442213403 has 24 divisors (see below), whose sum is σ = 47816038400. Its totient is φ = 19854433584.

The previous prime is 31442213351. The next prime is 31442213417. The reversal of 31442213403 is 30431224413.

31442213403 is a `hidden beast` number, since 3 + 1 + 4 + 42 + 213 + 403 = 666.

It is not a de Polignac number, because 31442213403 - 2¹⁰ = 31442212379 is a prime.

It is a super-2 number, since 2×31442213403² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31442213003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1074318 + ... + 1103196.

Almost surely, 2^31442213403 is an apocalyptic number.

31442213403 is a deficient number, since it is larger than the sum of its proper divisors (16373824997).

31442213403 is a wasteful number, since it uses less digits than its factorization.

31442213403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35271 (or 35268 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31442213403 its reverse (30431224413), we get a palindrome (61873437816).

The spelling of 31442213403 in words is "thirty-one billion, four hundred forty-two million, two hundred thirteen thousand, four hundred three".