103031431 has 4 divisors (see below), whose sum is σ = 103327000. Its totient is φ = 102735864.

The previous prime is 103031419. The next prime is 103031443. The reversal of 103031431 is 134130301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134130301 = 10733 ⋅12497.

It is an interprime number because it is at equal distance from previous prime (103031419) and next prime (103031443).

It is a cyclic number.

It is not a de Polignac number, because 103031431 - 2⁹ = 103030919 is a prime.

It is a super-2 number, since 2×103031431² = 21230951547815522, 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 (103031231) 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, 147261 + ... + 147958.

It is an arithmetic number, because the mean of its divisors is an integer number (25831750).

Almost surely, 2^103031431 is an apocalyptic number.

103031431 is a deficient number, since it is larger than the sum of its proper divisors (295569).

103031431 is an equidigital number, since it uses as much as digits as its factorization.

103031431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295568.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 103031431 is about 10150.4399412045. The cubic root of 103031431 is about 468.8024909277.

Adding to 103031431 its reverse (134130301), we get a palindrome (237161732).

The spelling of 103031431 in words is "one hundred three million, thirty-one thousand, four hundred thirty-one".