201231136453562 has 4 divisors (see below), whose sum is σ = 301846704680346. Its totient is φ = 100615568226780.

The previous prime is 201231136453541. The next prime is 201231136453577. The reversal of 201231136453562 is 265354631132102.

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

It can be written as a sum of positive squares in only one way, i.e., 199580633544601 + 1650502908961 = 14127301^2 + 1284719^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50307784113389 + ... + 50307784113392.

Almost surely, 2^{201231136453562} is an apocalyptic number.

201231136453562 is a deficient number, since it is larger than the sum of its proper divisors (100615568226784).

201231136453562 is a wasteful number, since it uses less digits than its factorization.

201231136453562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100615568226783.

The product of its (nonzero) digits is 777600, while the sum is 44.

Adding to 201231136453562 its reverse (265354631132102), we get a palindrome (466585767585664).

The spelling of 201231136453562 in words is "two hundred one trillion, two hundred thirty-one billion, one hundred thirty-six million, four hundred fifty-three thousand, five hundred sixty-two".