1031211343 has 4 divisors (see below), whose sum is σ = 1031324400. Its totient is φ = 1031098288.

The previous prime is 1031211341. The next prime is 1031211397. The reversal of 1031211343 is 3431121301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431121301 = 23 ⋅149179187.

It is a cyclic number.

It is not a de Polignac number, because 1031211343 - 2¹ = 1031211341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031211343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031211341) 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, 41518 + ... + 61531.

It is an arithmetic number, because the mean of its divisors is an integer number (257831100).

Almost surely, 2^1031211343 is an apocalyptic number.

1031211343 is a deficient number, since it is larger than the sum of its proper divisors (113057).

1031211343 is a wasteful number, since it uses less digits than its factorization.

1031211343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113056.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1031211343 is about 32112.4795523485. The cubic root of 1031211343 is about 1010.2973809804.

Adding to 1031211343 its reverse (3431121301), we get a palindrome (4462332644).

The spelling of 1031211343 in words is "one billion, thirty-one million, two hundred eleven thousand, three hundred forty-three".