1013403243 has 4 divisors (see below), whose sum is σ = 1351204328. Its totient is φ = 675602160.

The previous prime is 1013403239. The next prime is 1013403271. The reversal of 1013403243 is 3423043101.

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

It is not a de Polignac number, because 1013403243 - 2² = 1013403239 is a prime.

It is a super-2 number, since 2×1013403243² = 2053972265845834098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013403203) 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, 168900538 + ... + 168900543.

It is an arithmetic number, because the mean of its divisors is an integer number (337801082).

Almost surely, 2^1013403243 is an apocalyptic number.

1013403243 is a deficient number, since it is larger than the sum of its proper divisors (337801085).

1013403243 is an equidigital number, since it uses as much as digits as its factorization.

1013403243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337801084.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1013403243 is about 31833.9950838722. The cubic root of 1013403243 is about 1004.4479342151.

Adding to 1013403243 its reverse (3423043101), we get a palindrome (4436446344).

It can be divided in two parts, 10 and 13403243, that added together give a triangular number (13403253 = T₅₁₇₇).

The spelling of 1013403243 in words is "one billion, thirteen million, four hundred three thousand, two hundred forty-three".