11701531 has 2 divisors, whose sum is σ = 11701532. Its totient is φ = 11701530.

The previous prime is 11701519. The next prime is 11701537. The reversal of 11701531 is 13510711.

11701531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11701531 - 2²¹ = 9604379 is a prime.

It is a super-2 number, since 2×11701531² = 273851655487922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11701499 and 11701508.

It is not a weakly prime, because it can be changed into another prime (11701537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5850765 + 5850766.

It is an arithmetic number, because the mean of its divisors is an integer number (5850766).

Almost surely, 2^11701531 is an apocalyptic number.

11701531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11701531 is an equidigital number, since it uses as much as digits as its factorization.

11701531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105, while the sum is 19.

The square root of 11701531 is about 3420.7500639480. The cubic root of 11701531 is about 227.0287697951.

It can be divided in two parts, 1170 and 1531, that added together give a triangular number (2701 = T₇₃).

The spelling of 11701531 in words is "eleven million, seven hundred one thousand, five hundred thirty-one".