101390293 has 4 divisors (see below), whose sum is σ = 104886540. Its totient is φ = 97894048.

The previous prime is 101390291. The next prime is 101390297. The reversal of 101390293 is 392093101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 392093101 = 19 ⋅20636479.

It can be written as a sum of positive squares in 2 ways, for example, as 45185284 + 56205009 = 6722^2 + 7497^2 .

It is a cyclic number.

It is not a de Polignac number, because 101390293 - 2¹ = 101390291 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101390291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1748080 + ... + 1748137.

It is an arithmetic number, because the mean of its divisors is an integer number (26221635).

Almost surely, 2^101390293 is an apocalyptic number.

It is an amenable number.

101390293 is a deficient number, since it is larger than the sum of its proper divisors (3496247).

101390293 is an equidigital number, since it uses as much as digits as its factorization.

101390293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496246.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 101390293 is about 10069.2747007915. The cubic root of 101390293 is about 466.3000471450.

The spelling of 101390293 in words is "one hundred one million, three hundred ninety thousand, two hundred ninety-three".