10121731 has 2 divisors, whose sum is σ = 10121732. Its totient is φ = 10121730.

The previous prime is 10121729. The next prime is 10121743. The reversal of 10121731 is 13712101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121731 - 2¹ = 10121729 is a prime.

It is a super-2 number, since 2×10121731² = 204898876872722, which contains 22 as substring.

Together with 10121729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10121131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060865 + 5060866.

It is an arithmetic number, because the mean of its divisors is an integer number (5060866).

Almost surely, 2^10121731 is an apocalyptic number.

10121731 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121731 is an equidigital number, since it uses as much as digits as its factorization.

10121731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 10121731 is about 3181.4668000782. The cubic root of 10121731 is about 216.3141505025.

Adding to 10121731 its reverse (13712101), we get a palindrome (23833832).

The spelling of 10121731 in words is "ten million, one hundred twenty-one thousand, seven hundred thirty-one".