101531444394 has 32 divisors (see below), whose sum is σ = 206821944000. Its totient is φ = 33222777984.

The previous prime is 101531444363. The next prime is 101531444429. The reversal of 101531444394 is 493444135101.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609709 + ... + 758160.

It is an arithmetic number, because the mean of its divisors is an integer number (6463185750).

Almost surely, 2^101531444394 is an apocalyptic number.

101531444394 is an abundant number, since it is smaller than the sum of its proper divisors (105290499606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101531444394 is a wasteful number, since it uses less digits than its factorization.

101531444394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368102.

The product of its (nonzero) digits is 103680, while the sum is 39.

Adding to 101531444394 its reverse (493444135101), we get a palindrome (594975579495).

The spelling of 101531444394 in words is "one hundred one billion, five hundred thirty-one million, four hundred forty-four thousand, three hundred ninety-four".