1013021431 has 4 divisors (see below), whose sum is σ = 1017564352. Its totient is φ = 1008478512.

The previous prime is 1013021411. The next prime is 1013021437. The reversal of 1013021431 is 1341203101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1341203101 = 7 ⋅191600443.

It is a cyclic number.

It is not a de Polignac number, because 1013021431 - 2⁹ = 1013020919 is a prime.

It is a super-2 number, since 2×1013021431² = 2052424839330575522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013021437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2271126 + ... + 2271571.

It is an arithmetic number, because the mean of its divisors is an integer number (254391088).

Almost surely, 2^1013021431 is an apocalyptic number.

1013021431 is a deficient number, since it is larger than the sum of its proper divisors (4542921).

1013021431 is an equidigital number, since it uses as much as digits as its factorization.

1013021431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542920.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1013021431 is about 31827.9975964559. The cubic root of 1013021431 is about 1004.3217723766.

Adding to 1013021431 its reverse (1341203101), we get a palindrome (2354224532).

The spelling of 1013021431 in words is "one billion, thirteen million, twenty-one thousand, four hundred thirty-one".