131951101 has 4 divisors (see below), whose sum is σ = 132111100. Its totient is φ = 131791104.

The previous prime is 131951089. The next prime is 131951119. The reversal of 131951101 is 101159131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101159131 = 733 ⋅138007.

It can be written as a sum of positive squares in 2 ways, for example, as 29920900 + 102030201 = 5470^2 + 10101^2 .

It is not a de Polignac number, because 131951101 - 2¹⁵ = 131918333 is a prime.

It is a super-2 number, since 2×131951101² = 34822186110224402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131951201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78756 + ... + 80413.

It is an arithmetic number, because the mean of its divisors is an integer number (33027775).

Almost surely, 2^131951101 is an apocalyptic number.

It is an amenable number.

131951101 is a deficient number, since it is larger than the sum of its proper divisors (159999).

131951101 is an equidigital number, since it uses as much as digits as its factorization.

131951101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159998.

The product of its (nonzero) digits is 135, while the sum is 22.

The square root of 131951101 is about 11486.9970401319. The cubic root of 131951101 is about 509.1014564054.

The spelling of 131951101 in words is "one hundred thirty-one million, nine hundred fifty-one thousand, one hundred one".