101431730 has 16 divisors (see below), whose sum is σ = 182952000. Its totient is φ = 40489392.

The previous prime is 101431703. The next prime is 101431751. The reversal of 101431730 is 37134101.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5174 + ... + 15153.

It is an arithmetic number, because the mean of its divisors is an integer number (11434500).

Almost surely, 2^101431730 is an apocalyptic number.

101431730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101431730 is a deficient number, since it is larger than the sum of its proper divisors (81520270).

101431730 is a wasteful number, since it uses less digits than its factorization.

101431730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20833.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 101431730 is about 10071.3320866706. The cubic root of 101431730 is about 466.3635622437.

Adding to 101431730 its reverse (37134101), we get a palindrome (138565831).

The spelling of 101431730 in words is "one hundred one million, four hundred thirty-one thousand, seven hundred thirty".