131172157702 has 8 divisors (see below), whose sum is σ = 197085623112. Its totient is φ = 65476950000.

The previous prime is 131172157639. The next prime is 131172157717. The reversal of 131172157702 is 207751271131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×131172157702² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54562924 + ... + 54565327.

It is an arithmetic number, because the mean of its divisors is an integer number (24635702889).

Almost surely, 2^131172157702 is an apocalyptic number.

131172157702 is a deficient number, since it is larger than the sum of its proper divisors (65913465410).

131172157702 is a wasteful number, since it uses less digits than its factorization.

131172157702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109128854.

The product of its (nonzero) digits is 20580, while the sum is 37.

The spelling of 131172157702 in words is "one hundred thirty-one billion, one hundred seventy-two million, one hundred fifty-seven thousand, seven hundred two".