31040030343 has 24 divisors (see below), whose sum is σ = 49444910832. Its totient is φ = 17257774464.

The previous prime is 31040030341. The next prime is 31040030401. The reversal of 31040030343 is 34303004013.

It is not a de Polignac number, because 31040030343 - 2¹ = 31040030341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040030341) 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, 2848030 + ... + 2858907.

It is an arithmetic number, because the mean of its divisors is an integer number (2060204618).

Almost surely, 2^31040030343 is an apocalyptic number.

31040030343 is a deficient number, since it is larger than the sum of its proper divisors (18404880489).

31040030343 is a wasteful number, since it uses less digits than its factorization.

31040030343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5706991 (or 5706984 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 31040030343 its reverse (34303004013), we get a palindrome (65343034356).

The spelling of 31040030343 in words is "thirty-one billion, forty million, thirty thousand, three hundred forty-three".