101431634 has 4 divisors (see below), whose sum is σ = 152147454. Its totient is φ = 50715816.

The previous prime is 101431621. The next prime is 101431637. The reversal of 101431634 is 436134101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436134101 = 13 ⋅33548777.

It can be written as a sum of positive squares in only one way, i.e., 57805609 + 43626025 = 7603^2 + 6605^2 .

It is not an unprimeable number, because it can be changed into a prime (101431637) 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 as a sum of consecutive naturals, namely, 25357907 + ... + 25357910.

Almost surely, 2^101431634 is an apocalyptic number.

101431634 is a deficient number, since it is larger than the sum of its proper divisors (50715820).

101431634 is an equidigital number, since it uses as much as digits as its factorization.

101431634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50715819.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 101431634 is about 10071.3273206663. The cubic root of 101431634 is about 466.3634151138.

Adding to 101431634 its reverse (436134101), we get a palindrome (537565735).

The spelling of 101431634 in words is "one hundred one million, four hundred thirty-one thousand, six hundred thirty-four".