10781131 has 2 divisors, whose sum is σ = 10781132. Its totient is φ = 10781130.

The previous prime is 10781107. The next prime is 10781153. The reversal of 10781131 is 13118701.

It is an a-pointer prime, because the next prime (10781153) can be obtained adding 10781131 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10781131 is a prime.

It is a super-2 number, since 2×10781131² = 232465571278322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10781161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5390565 + 5390566.

It is an arithmetic number, because the mean of its divisors is an integer number (5390566).

Almost surely, 2^10781131 is an apocalyptic number.

10781131 is a deficient number, since it is larger than the sum of its proper divisors (1).

10781131 is an equidigital number, since it uses as much as digits as its factorization.

10781131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

The square root of 10781131 is about 3283.4632630806. The cubic root of 10781131 is about 220.9130852647.

Adding to 10781131 its reverse (13118701), we get a palindrome (23899832).

It can be divided in two parts, 1078 and 1131, that added together give a square (2209 = 47²).

The spelling of 10781131 in words is "ten million, seven hundred eighty-one thousand, one hundred thirty-one".