201261146431 has 4 divisors (see below), whose sum is σ = 202730206032. Its totient is φ = 199792086832.

The previous prime is 201261146419. The next prime is 201261146459. The reversal of 201261146431 is 134641162102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201261146431 - 2⁹ = 201261145919 is a prime.

It is a super-2 number, since 2×201261146431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201261146393 and 201261146402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201261146131) 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, 734529595 + ... + 734529868.

It is an arithmetic number, because the mean of its divisors is an integer number (50682551508).

Almost surely, 2^201261146431 is an apocalyptic number.

201261146431 is a deficient number, since it is larger than the sum of its proper divisors (1469059601).

201261146431 is a wasteful number, since it uses less digits than its factorization.

201261146431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469059600.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 201261146431 in words is "two hundred one billion, two hundred sixty-one million, one hundred forty-six thousand, four hundred thirty-one".