131011550 has 12 divisors (see below), whose sum is σ = 243681576. Its totient is φ = 52404600.

The previous prime is 131011547. The next prime is 131011553. The reversal of 131011550 is 55110131.

It is an interprime number because it is at equal distance from previous prime (131011547) and next prime (131011553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131011553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1310066 + ... + 1310165.

It is an arithmetic number, because the mean of its divisors is an integer number (20306798).

Almost surely, 2^131011550 is an apocalyptic number.

131011550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131011550 is a deficient number, since it is larger than the sum of its proper divisors (112670026).

131011550 is a wasteful number, since it uses less digits than its factorization.

131011550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620243 (or 2620238 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 131011550 is about 11446.0276952312. The cubic root of 131011550 is about 507.8902334810.

Adding to 131011550 its reverse (55110131), we get a palindrome (186121681).

The spelling of 131011550 in words is "one hundred thirty-one million, eleven thousand, five hundred fifty".