131021343 has 12 divisors (see below), whose sum is σ = 189680400. Its totient is φ = 87150336.

The previous prime is 131021339. The next prime is 131021347. The reversal of 131021343 is 343120131.

It is an interprime number because it is at equal distance from previous prime (131021339) and next prime (131021347).

It is not a de Polignac number, because 131021343 - 2² = 131021339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12171 + ... + 20252.

It is an arithmetic number, because the mean of its divisors is an integer number (15806700).

Almost surely, 2^131021343 is an apocalyptic number.

131021343 is a deficient number, since it is larger than the sum of its proper divisors (58659057).

131021343 is a wasteful number, since it uses less digits than its factorization.

131021343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32878 (or 32875 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 131021343 is about 11446.4554775703. The cubic root of 131021343 is about 507.9028879509.

Adding to 131021343 its reverse (343120131), we get a palindrome (474141474).

The spelling of 131021343 in words is "one hundred thirty-one million, twenty-one thousand, three hundred forty-three".