131021254 has 32 divisors (see below), whose sum is σ = 242484480. Its totient is φ = 51704352.

The previous prime is 131021251. The next prime is 131021257. The reversal of 131021254 is 452120131.

It is an interprime number because it is at equal distance from previous prime (131021251) and next prime (131021257).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131021251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112077 + ... + 113239.

It is an arithmetic number, because the mean of its divisors is an integer number (7577640).

Almost surely, 2^131021254 is an apocalyptic number.

131021254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131021254 is a deficient number, since it is larger than the sum of its proper divisors (111463226).

131021254 is a wasteful number, since it uses less digits than its factorization.

131021254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 131021254 is about 11446.4515899033. The cubic root of 131021254 is about 507.9027729483.

Adding to 131021254 its reverse (452120131), we get a palindrome (583141385).

The spelling of 131021254 in words is "one hundred thirty-one million, twenty-one thousand, two hundred fifty-four".