1013133431 has 4 divisors (see below), whose sum is σ = 1015779072. Its totient is φ = 1010487792.

The previous prime is 1013133391. The next prime is 1013133439. The reversal of 1013133431 is 1343313101.

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

It is a cyclic number.

It is not a de Polignac number, because 1013133431 - 2¹⁴ = 1013117047 is a prime.

It is a super-4 number, since 4×1013133431⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013133439) 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, 1322246 + ... + 1323011.

It is an arithmetic number, because the mean of its divisors is an integer number (253944768).

Almost surely, 2^1013133431 is an apocalyptic number.

1013133431 is a deficient number, since it is larger than the sum of its proper divisors (2645641).

1013133431 is an equidigital number, since it uses as much as digits as its factorization.

1013133431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645640.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1013133431 is about 31829.7570050417. The cubic root of 1013133431 is about 1004.3587837335.

Adding to 1013133431 its reverse (1343313101), we get a palindrome (2356446532).

The spelling of 1013133431 in words is "one billion, thirteen million, one hundred thirty-three thousand, four hundred thirty-one".