10121431 has 4 divisors (see below), whose sum is σ = 10161072. Its totient is φ = 10081792.

The previous prime is 10121429. The next prime is 10121437. The reversal of 10121431 is 13412101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13412101 = 1061 ⋅12641.

It is a cyclic number.

It is not a de Polignac number, because 10121431 - 2¹ = 10121429 is a prime.

It is a super-2 number, since 2×10121431² = 204886730975522, 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 (10121437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19435 + ... + 19948.

It is an arithmetic number, because the mean of its divisors is an integer number (2540268).

Almost surely, 2^10121431 is an apocalyptic number.

10121431 is a deficient number, since it is larger than the sum of its proper divisors (39641).

10121431 is an equidigital number, since it uses as much as digits as its factorization.

10121431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39640.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 10121431 is about 3181.4196516650. The cubic root of 10121431 is about 216.3120133553.

Adding to 10121431 its reverse (13412101), we get a palindrome (23533532).

The spelling of 10121431 in words is "ten million, one hundred twenty-one thousand, four hundred thirty-one".