101513431 has 2 divisors, whose sum is σ = 101513432. Its totient is φ = 101513430.

The previous prime is 101513429. The next prime is 101513471. The reversal of 101513431 is 134315101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101513431 - 2¹ = 101513429 is a prime.

It is a super-2 number, since 2×101513431² = 20609953346783522, which contains 22 as substring.

Together with 101513429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 101513399 and 101513408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101513471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50756715 + 50756716.

It is an arithmetic number, because the mean of its divisors is an integer number (50756716).

Almost surely, 2^101513431 is an apocalyptic number.

101513431 is a deficient number, since it is larger than the sum of its proper divisors (1).

101513431 is an equidigital number, since it uses as much as digits as its factorization.

101513431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 101513431 is about 10075.3873870934. The cubic root of 101513431 is about 466.4887437945.

Adding to 101513431 its reverse (134315101), we get a palindrome (235828532).

The spelling of 101513431 in words is "one hundred one million, five hundred thirteen thousand, four hundred thirty-one".